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Impressions of carrying a newly unveiled backpack this season 2019 [New releases & updates]

I've tried out all of this season's mountaineering backpacks, from new models to updated ones, so I'd like to share my thoughts on them

My preferred style of mountaineering means that I mainly use bags around 40 liters in size. This size is suitable for a wide range of uses, from day hikes to traverses with overnight stays in huts, and lightweight hikes with camping in tents. It's the perfect size for beginners, and there are many popular and standard models from various manufacturers available

Another feature of this class is the wide variety of backpacks available to suit different purposes and styles. As a result, this season saw a lot of traditional hiking types and simpler types primarily for climbing and fastpacking, so we'll introduce them broadly in these two categories. Of course, we're also currently conducting a rave review of backpacks this season, including the models mentioned here. We'll be uploading these soon, so please look forward to them

table of contents

Part 1: Backpacks for hiking and mountain climbing

Osprey Kestrel 38

OSPREY Osprey Kestrel 38 S/M Lacquered Blue
OSPREY

The Kestrel/Kite series, a staple model from a world-leading backpack brand and a familiar name on this website, has been updated for the first time in three years. Lightweight, comfortable, stable, and convenient, it's a highly refined model to begin with, so I was excited to check out what has changed

At first glance, it doesn't seem like much has changed. However,

Upon closer inspection, I was speechless at the sheer craftsmanship that had been achieved by adding so many minute improvements while maintaining overall perfection and balance

The first major change is the back panel. Its exquisite three-dimensional mesh structure keeps the weight securely in place, achieving both comfort and stability. The front pocket has also undergone a subtle but significant change. While the previous model was entirely mesh, the front has been redesigned with nylon fabric for increased durability. The stretch mesh on both sides allows for the storage of larger items, making it easier to store crampons and other gear. The side compression straps extending from this pocket also double as pole holders at the top and belts at the bottom to increase the stability of the waist harness. It's impressive how they've managed to minimize the number of components without sacrificing functionality. There are still plenty of other impressive features, but please look forward to the detailed review

GREGORY ZUL 40

Another world-class hiking backpack from the world-renowned brand, the ZUL/Jade series, has also been updated for the first time in about three years. With a mesh trampoline structure that raises the back panel and an incredibly comfortable fit that is the brand's signature, this model is reaching the pinnacle of its capabilities, so I was excited to see what else would change

The biggest change is that the back length is finally adjustable. In my review of the previous model, I pointed out that this was a must-have feature for a flagship model from Gregory, which prides itself on its unbeatable fit, and now my wish has finally come true. Furthermore, the mesh that wraps around the back and waist is now softer and more comfortable, and the waist harness fits snugly around the waist, taking the comfort of carrying the backpack to an even higher level, moving it from AAA to AAA+

Continuing from the previous model, the pockets and attachments that are unique to Gregory remain easy to use and reach the itchy spots. This has also undergone stable evolution, making it a product that everyone will not regret buying

MILLET Saas Fee 60+20

created by Rinker
MILLET
¥42,900 (As of 2026/01/29 21:45:45, according to Amazon - Details)

Alpine-style backpacks have long been beloved by Japanese mountaineers for their geographical and historical reasons, and the MILLET Saas-Fee, a classic entry-level backpack, has finally released a 60-liter model. Its slim silhouette, a rare sight these days, not only excels in design but also offers the engineering benefit of aligning the center of gravity to the body's center. Thick padding on the shoulders and waist makes it durable enough to withstand heavy loads and long walks. While incorporating this comfort and stability, it also offers easy access and versatile storage, with a U-shaped main zip access at the front, an expandable front pocket, and a foldable waist pocket, creating a well-rounded, large-sized backpack. It's rare to find a large, mountain-climbing backpack with such flawless features

Karrimor Ridge 40

Karrimor Ridge 40 Large Sea Grey
Karrimor

The Karrimor Ridge series, a popular backpack with a sophisticated design, comfortable feel, and functionality, seems to have received some updates. Air mesh material with activated carbon processing is used in areas that come into contact with the body, improving sweat absorption and quick-drying properties. Activated carbon is also known for its deodorizing properties, so it would be interesting to see if this pad also helps prevent odors to some extent. The shoulders and back of a backpack are areas that tend to pick up odors, even if you wash them every time

However, as for the all-important comfort of carrying it, unfortunately, just like the previous model, I just couldn't bring myself to like it. Backpacks of this caliber require a rigid waist harness to be stable, but the part where the back frame and waist harness connect is not very rigid, making it difficult for the weight to be distributed to your waist when wearing it, resulting in a feeling of being pulled backwards (although this may be different for the 30L). Personally, I found the Intrepid 40 from the same brand to be excellent, including the comfort of carrying it, so I'd like to see the same level of comfort and stability in the standard model

THE NORTH FACE Hydra 38

Until last year, The North Face had a lineup of lightweight, all-around backpacks called the Kyrus, but this season they have been reborn as the Hydra series. A stark departure from the classic look of the past, the Hydra series now features bold designs and bold colors that seem to symbolize the brand's recent momentum. Not bad

Made with thin, lightweight materials, this backpack holds nearly 40 liters, yet weighs just 1 kg, a welcome relief the moment you put it on. The back is also adjustable in length. The mesh trampoline structure on the back and shoulder pads provide excellent breathability and comfort. Large pockets on the front and both sides more than make up for the narrow main compartment, which is slightly compressed by the frame. It's perfect for summer speed hiking. The brand's speed hiking model, the FP30, can be a tough choice, but if you plan on spending less time riding and don't like carrying it on your shoulders or chest (preferring to carry it on your waist as much as possible), the Hydra 38 is the perfect choice.

Part 2: Lightweight Climbing Backpacks

MAMMUT Trion Spine 35

MAMMUT Trion Spine 35 Backpack, Black/White, 35L, 2520-00860-0047

I've been eagerly waiting to try out Mammut's latest product, the Trion Spine series, ever since I discovered it at an exhibition. As the name "Spine" (= spine) suggests, this pack's highlight is its revolutionary back system. The patented Active Spine Technology is a unique back mechanism that doesn't restrict hip or shoulder movement and minimizes shifts in the center of gravity caused by those movements. The highly rigid frame and waist harness securely distribute the weight of the pack, and the back size is extremely easy to adjust. The fit and comfort are impeccable, and it feels like it will be able to withstand long walks like mountain hikes. I never expected that such a mature backpack structure would see the birth of yet another new back system in the Reiwa era

However, since it's primarily an alpine backpack, don't expect an excessive number of pockets or attachments. It's also made of very durable fabric, making it quite heavy. For this reason, it's probably not a model we'd immediately recommend to beginners looking to start hiking. However, it can hold a double axe, various climbing gear, skis, and more, making it suitable for all-season, all-around mountain activities, making it a highly versatile model

Arc'teryx Alpha AR 35

Arc'teryx's Alpha series is known for its simple, minimalist, climbing-oriented, and functional models, and in that sense, I was shocked by the stripped-down nature of the Alpha FL, which I reviewed previously. On the other hand, the new Alpha AR 35 is a slightly milder, more refined model. Personally, I felt it was easier to use for activities that require more comprehensive strength, such as stream climbing, and I couldn't help but lock onto it

The back panel, like the previous Alpha FL series, is a simple, flat panel with a foam pad that simply curves to the shape of the spine. These can be easily removed to reduce weight. Not only that, but the top lid and front drawcord can also be removed, allowing for a minimalist style on par with the Alpha FL, making this a two-for-one deal. The design of the axe attachment and buckle, among other things, has been carefully considered to achieve both lightness and durability while using as few parts as possible. While it may not be easy for beginners to get into, this is a case of functional beauty, and each and every one of these is refreshing

Mountain Hardwear Scrambler 35 Backpack

Mountain Hardwear Scrambler 35 Backpack, M/L, White
Mountain Hardwear

This backpack is no less impressive when it comes to being a simple, lightweight, and functional backpack. Made entirely from X-PAC, a material that has been adopted by ultra-lightweight garage brands in recent years, it combines strength, lightness, and waterproofing while boasting a crisp texture and sophisticated design. The back panel is also equipped with a breathable cushion, making it comfortable to wear despite its simplicity. It naturally has plenty of convenient attachments for climbing, such as rope holders, gear loops, and double axe holders, but what sets it apart from the Alpha AR is that it also offers a decent amount of convenient storage for walking, such as a removable top lid and side pockets. This makes it seem like it could be used for fast and light speed hikes

However, the waist harness is merely a decorative accessory to prevent movement, so I wouldn't recommend it for regular hiking. Instead, its simplicity and good design mean it could even be used as a casual backpack for everyday use around town. In that sense, it's surprisingly versatile

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