The sleeping bag and mat are essential for a comfortable sleeping experience in outdoor activities such as hiking in a tent or camping. It keeps you warm, insulates cold air from the ground, and the cushioned mat is the first floor for a comfortable sleep.
In addition, I often use an inner sleeping bag to further improve the quality of my sleep.
The inner sleeping bag not only promotes a comfortable sleep due to its soft feel, but also boosts heat retention and protects the sleeping bag from dirt, making it a convenient item with many additional functions.
I tried using SEA TO SUMMIT 's inner sleeping bag "Reactor Liner Mummy With Drawcord,"
table of contents
SEA TO SUMMIT Reactor Liner Mommy With Drawcord Main Features
A mummy-shaped inner sleeping bag made from Thermolite®Pro, which absorbs and reflects the infrared rays emitted by the body. The heat retention of a three-season sleeping bag can be increased by up to 6%, so not only can it add warmth to your sleeping bag, but it can also be used as a sheet to prevent dirt from occurring on the sleeping bag itself. The highly elastic fabric does not interfere with movement in the sleeping bag, and can be used alone during high temperatures, and can be used as an inner layer when the temperature is low, making it possible to use it all year round.
Recommended points
- Comfortable to the touch even when touched with bare skin
- Highly stretchy material does not interfere with movement
- Thin yet strong heat retention
- By being able to put your hands and feet out, you can walk and cook while still in your inner sleeping bag.
- Lightweight and compact
- Machine washable and easy
Points that interest me
- I'm worried about the drawcords of the footbox being slept.
Main Specifications and ratings
| item | SEA TO SUMMIT Reactor Liner Mummy With Draw Code |
|---|---|
| weight | Compact: 266g Standard: 283g |
| size | Compact: Width 80 x Length 198cm Standard: Width 80 x Length 216cm |
| Storage size | Height 11 x Width 15 x Depth 7cm |
| material | 100% polyester Thermolite® Pro 50%/Thermolite® EcoMade 50% |
| Reference price (tax included) | Compact: 10,780 yen Standard: 11.550 yen |
| Outdoor Gearzine Review | |
| Comfort | ★★★★☆ |
| Thermal insulation | ★★★☆☆ |
| weight | ★★★☆☆ |
| Storageability | ★★★★☆ |
| Easy to use | ★★★★★ |
| Durability | ★★★☆☆ |
| Versatility | ★★★★★ |
Impressions used
Comfortable to the touch even when touched with bare skin, and highly elastic material with no discomfort
As mentioned at the beginning, the role of an inner sleeping bag is to boost heat retention, protect the sleeping bag itself from sweat and sebum stains coming from the human body, and to promote a comfortable sleep.
Many typical sleeping bags use fabrics with water-repellent properties, and when they are dry, they are smooth when touched, but when they touch your skin while sweating, they may stick or become sticky, but the reactor liner mummy with drawstrings are very soft to the touch and have no discomfort. It feels the same as everyday clothing, and even if it comes into contact with your skin directly, it won't bother you at all (or rather, it's so comfortable). Made from highly elastic 100% polyester material, it is less likely to interfere with movements while sleeping, and it also dries quickly, making it easy to dry even if it gets wet, making it comfortable inside the sleeping bag when you sleep.
It is highly elastic so that you can sit inside
Thin yet strong heat retention
The material is made of 50% of Thermolite® Pro and Thermolite® EcoMade. This Thermolite® is a fabric developed by the American company Lycra, and not only does it feel good on the skin and dries quickly, but it also has excellent heat retention.
Reactor Liner The Mummy With Drawcord is the thinnest model of the three reactor series, which adds warmth. The fabric is thin enough to be transparent, but its heat retention is more than it looks, and when you go inside it, it feels gentle and warm, and it's certainly a great way to expect a boost in heat retention. Since it is an inner sleeping bag, it is dangerous to rely too much on heat retention, but according to the official website, the heat retention of a three-season sleeping bag can be improved by up to 6%.
the reactor liner mummy with drawcord is not impossible to use alone . Although it is not recommended to use it alone in mountainous areas even in summer, it is possible to enjoy a comfortable environment on its own, such as when thru-hiking trails at low altitudes or camping, if you don't need a sleeping bag.
Reactor Liner Mummy with Drawcord Heat Retention
In actual testing in the field, I felt the reactor liner mummy with drawcord , but I felt that it kept me warm by about 3 to 5°C in addition to the temperature (comfortable temperature) of the sleeping bag.
It varies greatly depending on the season, so this is just a guideline based on the author's experience, but for example, when using a sleeping bag with a comfortable temperature of -5°C in an environment with a temperature of -5°C, I was able to stay warm, but I also felt cold in an environment with an outside temperature of -5°C and a sleeping bag with a lower limit of 5°C, so it is important to note that this item is effective while the heat retention of the main sleeping bag is guaranteed.
As I believe that this item will improve the comfortable operating temperature range by 3 to 5°C. It is important to understand that this item does not improve heat retention from the lower temperature limit, which is the limit for the range of use of your sleeping bag.
Lightweight, compact and portable
The storage bag also weighs 296g, which is lighter than 300g.
It is a standard size and weighs 283g, making it extremely compact and easy to carry. The great advantage is that adding 283g to the main sleeping bag gives you a boost in heat retention, protection of the sleeping bag, and a comfortable feel. It is also easy to carry when staying in a tent, not just when staying in a mountain hut, and while a futon is generally provided with care for a mountain hut, you can also use it with more peace of mind by using sheets.
The calculated increased temperature "6%" is difficult to understand
What caught my eye was that the 6% figure, which improves the heat retention of a three-season sleeping bag, is a bit confusing. It is dangerous to rely on the heat retention of the inner sleeping bag in mountainous areas during winter, so it is assumed that the main sleeping bag will be compatible with the environment and will be a boost to the heat retention, but the display has been changed to 6% of the sleeping bag that displays the operating temperature, making it difficult to calculate, and the drawback is that it is difficult to imagine how much heat retention can be achieved by using this inner sleeping bag.
I also used the old model, the "Thermolite Reactor," but the old model clearly stated the temperature as a maximum of 8°C, so it was easy to use as a guide. I understood that it is dangerous to easily believe it by displaying clear numbers, but as a user, I felt that it would be easier to understand if the heat retention display was displayed in the same unit and would be easier to use as a guide for choosing tools.
The 8°C improvement in the old model is the maximum temperature, and is not a guaranteed value. The author concludes that the new model reactor liner mummy drawcord can also be expected to be stable at 3-5°C from the comfortable operating temperature by using it multiple times.
The ability to put your hands and feet out makes it convenient to walk while still in the inner sleeping bag and cook
Reactor Liner When I saw the Mummy With Drawcord, I decided to buy it instantly, which means I was able to put my hands and feet out. A regular mommy-shaped sleeping bag cannot be able to move out your arms and legs once it's inside, but the reactor liner mommy-with drawcord allows you to put out your arms and legs, making it closer to the feeling of "wearing" your sleeping bag than entering the sleeping bag, and after setting up the tent at the tent, you can stay on until you go to sleep.
Because it is highly elastic, you can sit cross-legged without any problems, and you can also cook and eat by being able to put out both hands. You can walk by lifting your waist, so you can even go to the toilet while wearing it.
There may be some pros and cons to how it looks when worn, but when I left the sleeping bag every time I had to take off my innerwear, so I was able to stay comfortable in the tent area.
One thing that bothers me is that while I'm sleeping, I feel a bit uncomfortable by squeezing the drawcord under my feet. The fabric itself is supple and comfortable, but when squeezed by the drawstring, you can feel that there is a bump-like thing. When you don't have to worry about the cold, you can solve the problem by using the drawcord while it is free, but in situations where you are worried about the cold and want to maximize heat retention in perfect condition (though it's not so much that you can't sleep and feel stressed). By the way, if you don't like the discomfort at your feet, there are models that do not have drawcords.
When the drawcord is tightened, it looks like a bump and is a bit of a concern when I'm sleeping.
Don't hesitate to enter because the entrance is different colour
It is a yellow color that is easy to notice, but since there is no zipper, it is basically like you're going in and out of the body (it's also possible to get in from the feet) The different color of the entrance makes it easier to recognize somewhere in the entrance, and there's no need to worry about anything when you enter. There are buttons where you can put your hands on it, so by unbuttoning it, it is easier to enter and exit. Although it is a small point, you can see that it has been designed to make it easier for users to use.
The main color is yellow and the entrance is black, making it easy to find
Machine washable and easy
The inner sleeping bag also protects the main sleeping bag from dirt caused by sweat and sebum, but it also has a hygiene advantage as it allows you to wash it casually. The down sleeping bags and synthetic sleeping bags that are mainly used can be washed, but the mass is large and it takes time to wash them every time they are used. the reactor liner Mummy with drawcord is a small mass that can be thrown into your washing machine at home and washed on the regular course Even if you wash it every time you use it, it won't be too much trouble and you can always use it in a beautiful state.
Summary: By adding 1 to your main sleeping bag, you can improve your sleep in the mountains!
Although it is lightweight, it is not a problem if you don't have one, so it can be said to be a luxury item for mountain climbing, hiking, and traveling, carrying food, clothing and clothing. However, considering the comfort, convenience and ease of use you can get, it is well worth adding to your equipment. Reactor Liner Mummy With Drawcord to improve your sleep quality in the mountains?
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Yosuke
People who act with just one backpack with the motto of "as light as possible" so that they don't get inconvenient.
From spring to autumn, I chase after char deep in the mountains and go fishing in the mountain stream. We walked the mountains in search of spectacular views that cannot be seen from the ground. Camping to be healed by the bonfire. Snowboarding is a floating mountain with a mountain of silver.
A freelance writer who has been enjoying the outdoors for over 20 years and enjoying the outdoors in his own way all year round. Based on my experience writing articles for more than dozens of outdoor web media, I will be sharing my own experiences and tools that I have been using.