Say goodbye to sticky sweat and the refreshing feeling of a breeze. Finetrack's new "Sylpha Pants / Miyama Pants" are the trekking pants that mountain lovers have truly wanted to wear in the scorching summer heat. [Practical Review]

How well do these trekking pants, "designed for the harsh Japanese summer mountains," perform in extreme heat?

Last time, we were able to ask the developers of Finetrack, a leading domestic outdoor brand, some very in-depth questions in true Outdoor Gearzine fashion, about " What functions are necessary for trekking pants, and which pair should you really choose? " This time, we've had the chance to try out Finetrack's new trekking pants for this summer, the "Sylpha Pants" and "Miyama Pants," which are sure to showcase their meticulous attention to detail, in the field, and we'll be reviewing them here.

Sweaty, torn... A professional solves your trekking pants problems. Learn how to choose the "best pair" from Finetrack

Why is choosing hiking pants (trekking pants) so difficult these days...?.

Key features of Finetrack's "Sylpha Pants / Miyama Pants"

In recent years in Japan, the extreme heat that was once considered "abnormally hot" has somehow become the norm for summer. The " Sylpha Pants / Miyama Pants " are lightweight, thin trekking pants that encompass a variety of functions required for mountain activities in these increasingly harsh summers.

The " Sylpha Pants " are ultra-thin trekking pants for midsummer, offering the exceptional freedom of movement and durability that Finetrack is proud of, while achieving a cool, "breezy" feel with outstanding breathability. They boast approximately three times the breathability of the company's standard Camino Pants, and large ventilation openings (Link Vents) on the sides of the thighs further efficiently release heat. Made from 100% "66 Nylon," which is thin yet strong, they combine the toughness required in mountainous terrain. The textured fabric prevents sticking due to sweat, and the vertical and horizontal stretch and excellent durable water repellency support comfortable movement.

On the other hand, the " Miyama Pants " are cool and comfortable summer pants that can be worn without hesitation not only for mountain activities but also for relaxing at the foot of the mountain. They use thin yet strong "66 nylon" to ensure durability, and adopt a "relaxed silhouette" that allows air to pass through easily to maintain a refreshing feel. They also feature a drawstring waist that does not interfere with backpacks, a dedicated smartphone pocket on the right rear that does not bounce around, as well as ventilation holes (Link Vent) and excellent durable water repellency, making them highly practical for mountain climbing in the middle of summer. They are perfect for those who want to wear comfortable pants that can be worn on both workdays and days off.

Both models are available in men's and women's versions, allowing you to comfortably enjoy a variety of outdoor activities during the Japanese summer

My favorite points about "Sylpha Pants"

• Excellent breathability and outstanding ventilation thanks to LinkVent
• The three-dimensional texture prevents sticking even when you sweat, and the nylon's contact cooling effect provides a refreshing feel
• The three-dimensional pattern and high stretchability allow for easy movement of the feet while walking
• An astonishingly durable water-repellent finish that achieves "80 points after 100 washes"
• Despite being lightweight, it's tough enough to provide peace of mind even during mountain climbing

Points of interest regarding "Sylpha Pants"

• Because it's made of a thin, breathable fabric, it's a bit too cold for seasons other than the early summer months
• The lining has a slightly bumpy texture, although it doesn't feel sticky
• The hem is a bit wide and cannot be adjusted to tighten it

My favorite features of "Miyama Pants"

• A comfortable, relaxed silhouette that's neither too sporty nor too casual for the city
• A comfortable feel that combines a supple texture with a dry, smooth feel
• A perfect balance of thinness, lightness, strength, and ease of movement
• Waist area that is less likely to interfere with a backpack
• Well-thought-out, practical pockets

Points of interest in "Miyama Pants"

• For strenuous mountaineering or climbing, Sylpha or Camino pants are more suitable
• When using it for mountain climbing, be careful that items don't fall out of the front pockets which don't have zippers
• It would have been even better if there were belt loops available so that the waist could also be worn with a belt

Specifications and ratings

Detailed review of Sylpha Pants

Although this wasn't a full-fledged mid-summer mountain climb, I was still able to wear them several times, including on low-mountain treks in warm weather exceeding 15℃. In recent years, by April, while walking on trails, the pants not only become uncomfortable due to the dampness and stickiness from sweat, but my knees also get caught when crossing large steps, leading to fatigue. With the upcoming hot season in mind, I tried them on in a slightly upbeat, sweat-inducing situation

Exceptional breathability and efficient ventilation structure to reduce the heat of midsummer

From the moment you put them on, you'll be surprised by the refreshing feel of the Sylpha pants, which is completely different from typical three-season trekking pants. The thin, crisp (or rather, dry) texture is largely due to the "dry-touch structure" created by the naturally occurring unevenness of the ripstop fabric, which is made up of threads of different thicknesses, making the surface that comes into contact with the skin three-dimensional. This prevents the fabric from sticking to your skin even when you sweat, so you can wear them comfortably and dryly. While they are not the lightest summer pants on the market, they are still considerably lighter than three-season models, and you will hardly feel any burden of weight when wearing them

The fine mesh in the fabric doesn't hinder the natural movement of air, so there's absolutely no feeling of heat building up inside the pants. I immediately realized this was the power of the original fabric, which is rumored to have "about three times the breathability of Camino pants"*. Even if the fabric gets wet or stuffy due to sweating, it dries in no time, keeping you cool for the sweltering heat and humidity of summer mountain climbing ahead. Conversely, in colder weather, it easily lets warm air escape from inside the garment, so it's not suitable for situations where warmth is required

*Air permeability: JIS L 1096 Method A

The fabric is so thin that you can see through it when held up to the light, but thanks to the 66 nylon material and ripstop construction, it's surprisingly strong for its thinness

Even with the materials already providing excellent breathability and quick-drying properties, these pants also feature Finetrack's unique "LinkVent" ventilation system, specially tuned for summer, further accelerating the elimination of stuffiness. The summer version of LinkVent has larger mesh holes than usual, resulting in significantly better ventilation performance compared to conventional models. Honestly, despite being long pants, they felt almost as breathable as shorts

When you walk with the Link Vent open, the hot air inside is naturally expelled to the outside, promoting air circulation

Despite being lightweight, it's tough enough to handle serious mountaineering

The fabric used in the Sylpha pants is 100% high-strength "66 nylon," and as mentioned earlier, the ripstop fabric further enhances its strength. This allows the pants to be extremely thin, breathable, and have a cool, smooth feel, while also possessing the durability required for mountaineering pants that can withstand abrasion against rocks and bushwhacking. Incidentally, nylon fibers have a higher thermal conductivity than polyester, giving them a naturally cool feel upon contact, making them an excellent choice for cool summer pants

When gaps are added to the fabric to improve breathability for summer, the strength is generally reduced, making it more prone to snagging on branches and rocks, thus decreasing durability. The way this dilemma has been so efficiently and brilliantly overcome is nothing short of remarkable

The three-dimensional pattern and moderate stretch allow for easy foot movement while walking

As mentioned in the first part, Finetrack's commitment to stretch fabrics is evident here as well. Using 100% "66 nylon," which is overwhelmingly stronger than polyester, they ensure the toughness (tear strength and abrasion resistance) necessary for mountaineering pants, while employing "mechanical stretch," which creates elasticity through the structure of the yarn itself, without using any polyurethane (stretch material) that is prone to deterioration. This achieves both flexible leg movement that stretches vertically and horizontally and a long lifespan

While slightly loose, it's not too baggy, and the natural silhouette that beautifully accentuates the lower body's lines is made possible by a meticulously crafted three-dimensional pattern that doesn't hinder leg movement and supports smooth movement of the hips and knees. Whether you bend your knees all the way or squat down, the lack of resistance or discomfort on the body remains as remarkable as ever

Featuring three-dimensional darts at the knees, this garment boasts a three-dimensional pattern that balances a beautiful silhouette with ease of movement

The wide hem completely covers the feet, even when paired with mid-to-high-cut boots, making it suitable for serious mountaineering. However, there's no way to tighten the hem if you want to, so personally, I think it would be more practical if the hem width could be adjusted to tighten it, reducing flapping and allowing you to lift and secure the hem

The amazing water-repellent finish, rated "80 points after 100 washes," makes it resistant to getting wet and quick to dry

Another appealing feature of these pants that I must mention is their excellent water-repellent properties, which are strong and long-lasting

The key feature is that it's not just highly water-repellent, but its original water-repellent properties don't diminish easily even after repeated washing

This fabric is thin and highly breathable, yet it features a superior durable water-repellent finish that maintains a water-repellent performance of 80 points or higher even after 100 washes. This means it repels sudden showers and morning dew, as well as light rain, preventing you from getting wet or cold. It also resists mud stains and dries quickly because it doesn't get wet easily in the first place, providing excellent performance for maintaining safety and comfort in harsh mountain environments. In low mountains, it's not uncommon to find your legs soaked from the knees down when walking on trails overgrown with weeds from dawn, but based on my experience walking in areas similar to that, my feet hardly got wet at all

Functional storage and waist adjustment system, limited to the bare essentials

The various storage compartments and parts that affect usability and adjustability are very simple, but they give the impression of incorporating all the necessary elements. It has zippered pockets (left, right, and right hip; hip pockets are only available on men's sizes), which are essential for serious outdoor use, and helps prevent small items from falling out

Additionally, the inside of the right pocket has a coin pocket and a key loop, which are convenient for storing coins and keys

Additionally, the waistband features a flat buckle that isn't bulky, allowing for a secure and adjustable fit (it also includes the familiar storage compartment at the end of the belt)

Detailed review of Miyama Pants

A relaxed silhouette that's neither too sporty nor too casual for the city

Next, I tried the "Miyama Pants," which, like the Sylpha Pants I mentioned earlier, are positioned as "summer mountain pants." However, due to differences in the intended usage scenarios, there were subtle differences in functionality and comfort. First, both aim to provide some relief from the intense summer heat by using a light and thin fabric. However, while the Sylpha Pants are designed for "offensive" coolness when actively moving through challenging terrain, the Miyama Pants are designed for "defensive" coolness when relaxing and taking it easy outdoors even in scorching heat

The first thing that shows the difference in concept is the pattern (silhouette). The Miyama pants adopt the most relaxed silhouette in the company's lineup. Nevertheless, the design, which is subtly tapered towards the hem, is delicate and "sleek," and I personally felt that it made the legs look the best, so I was very pleased with it. I feel that they can be worn without feeling out of place for everything from moderate mountain climbing to approaches and after descending, and even as everyday street wear

A comfortable feel that combines a supple texture with a dry, smooth feel

Next, the feel of the fabric is distinctly different from that of Silpha. While Silpha has a rough, textured feel, the Miyama pants have a moist, supple, and pleasant feel against the skin, and the texture itself is dry and smooth. The breathability isn't as extremely high as Silpha, but you can feel the natural breathability due to the thinness of the fabric. For activities that aren't too intense, this comfortable combination of smoothness and suppleness is maintained, and combined with the relaxed silhouette, there is absolutely no stress

However, when it comes to high-tempo activities that cause you to sweat profusely, a fabric with a pronounced texture like Sylpha's is advantageous in preventing stickiness (although, as shown in the photo below, it still has summer-specific LinkVent, so it's definitely in the category of being breathable)

It also features a summer-specific "LinkVent" to comfortably support summer activities

A perfect balance of breathability, strength, and ease of movement

While offering a comfortable and refreshing feel, the use of the same tough "66 nylon" as the Sylpha pants ensures undeniable strength—a testament to Finetrack's expertise. In terms of ease of movement, although the material isn't extremely stretchy, the relaxed three-dimensional pattern and moderate mechanical stretch provide a good range of motion (though not quite as much as the Sylpha)

The waist area is designed to not interfere with a backpack, and it has practical pockets

Even in the smallest details, unlike Sylpha's more austere approach, you can feel that they prioritize "convenience" in everyday situations. The "smartphone pocket (with zipper)" located on the right rear is a good example; its position prevents it from bouncing around while walking, and because it avoids being in the front or back, it doesn't get in the way when sitting. Personally, I think it's such a convenient and favorite pocket that it would be perfectly fine to have on regular, full-fledged trekking pants as well

A smartphone pocket is positioned in a location that minimizes interference

Furthermore, the hand pockets on both sides have been deliberately designed without zippers, making it easy to slip your hands in smoothly

The pockets feature zippers for everyday usability and design aesthetics. However, when using them during activities like mountain climbing, care must be taken to avoid dropping items

Furthermore, the waist adjustment uses a "string" instead of a buckle, keeping the waist area flat, and preventing discomfort from buckles digging into the skin even when tightening a backpack's hip belt. This is a welcome feature for outdoor activities such as hiking, but personally, I would have preferred it to have belt loops or something similar to make it more practical for use in urban areas

The waistband, which uses a "string" instead of a buckle, feels lighter around the waist, but it also gives off a slightly too casual impression for everyday use, so it's a matter of personal preference

Comparison and selection guide for the standard models "Camino Pants" and "Storm Gorge Alpine Pants"

With the addition of two new summer models, Finetrack's trekking pants lineup has become even more diverse, making it easier to choose the right pair for your needs. Here, we'll re-examine the differences and organize them by wearing scene and intended use

Comparison with Camino Pants (all-rounder for spring to autumn)

The Camino Pants are a versatile model designed with an emphasis on balancing all the functions required of serious trekking pants, such as windproofness, heat retention, breathability, and durability, making them suitable for a wide range of seasons from spring to autumn and for various levels of mountaineering, from light to hard. On the other hand, the Sylpha (and Miyama for lighter situations) are thinner and lighter, focusing on breathability and coolness, and are specialized models that provide exceptional coolness, especially in midsummer, scorching heat, and low mountains. While there wasn't a significant difference in ease of movement or water repellency, they are inevitably inferior to the Camino

Therefore, if you're worried about the cold, trekking in high-altitude mountains, or in any situation where you're unsure which pants to wear, you the Camino Pants . However, in summer situations where you can be sure that the heat and sweat will be managed effectively, choosing the Sylpha (or Miyama for lighter outdoor activities) will significantly reduce discomfort.

Comparison with Storm Gorge Alpine Pants (a tough model for year-round use)

The Storm Gorge Alpine Pants are made of a medium-weight fabric with high windproof and durable properties, making them a reliable choice for tough, all-season activities such as snowmelt, winter mountaineering, and canyoning. Therefore, their fabric durability and warmth are exceptional. However, they are far too hot to wear in the middle of summer on low mountains, and their overall weight and bulk make them significantly less agile than pants like the Sylpha. For example, you might use the Sylpha pants for spring and summer trekking, and switch to the Storm Gorge for other activities, thus covering all seasons and genres.

The Miyama Pants should be considered as a "lightweight summer trekking pant," which is slightly different from the " Sylpha-Camino-Storm Gorge

A comparison of the features of Finetrack's trekking pants lineup (Outdoor Gearzine's independent evaluation)

Differences in silhouette (from left to right: "Camino Pants," "Sylpha Pants," "Miyama Pants," and "Storm Gorge Alpine Pants"). The Sylpha Pants (second from the left) have a slightly wider pattern than the Camino Pants, perhaps to prevent them from clinging to the skin. The Miyama Pants (third from the left) have a more subtle three-dimensional pattern, resulting in a clean silhouette that is not immediately apparent, but offers an even more relaxed fit

The difference lies in the feel and texture. The Sylpha pants have the strongest three-dimensional texture (less clinging to the skin) due to their ripstop fabric. On the other hand, the Miyama pants felt smooth and had the finest, gentlest texture

In summary: Have there ever been pants that so thoroughly pursued comfort and reliability during scorching summer mountain climbing? This trekking pant has made me realize once again that it's a new summer staple

In response to the increasingly harsh summer conditions caused by climate change, many pants designed for summer mountain climbing in Japan have recently appeared on the market. However, the Silpha, which doesn't simply use thinner fabric to make it cooler, but instead pursues functions related to safety and comfort in mountaineering without compromising on "strength," "water repellency," and "three-dimensional pattern & stretch (freedom of leg movement)," and the Miyama, which accompanies not only serious mountaineering but also various outdoor activities where you want to stay comfortable in the heat, both possess the same high quality, while each exhibiting a clear individuality, truly represent the essence of Finetrack pants

While primarily intended for wear in warmer seasons, for those like myself who engage in fast-paced mountain climbing that involves heavy sweating, wearing the Sylpha Pants Miyama Pants " would be incredibly useful for nature-based trips where the line between work and leisure is blurred. In any case, among the summer trekking pants, where there are still relatively few standout models, these pants have certainly made a significant impact.

Details and purchase information for Sylpha Pants / Miyama Pants

For the latest product information and details, please visit the finetrack official website

[Finetrack] Sylpha Pants (Men's) / FBM1101 (JP, Alphabet, M, Mocha Brown)

created by Rinker

finetrack

¥19,140 (As of 8:47:10 AM on April 2, 2026, according to Amazon - details)

• Amazon
• Rakuten Market
• Yahoo Shopping

[Finetrack] Miyama Pants (Men's) / FBM1201 (JP, Alphabet, M, Black)

created by Rinker

finetrack

¥17,600 (As of 8:47:26 AM on April 2, 2026, according to Amazon - details)

• Amazon
• Rakuten Market
• Yahoo Shopping

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