If you’re backpacker, you likely already know what a sleep sack is. For those of you who aren’t familiar with this very handy and very packable item, it’s a liner you sleep in that puts a bit of distance between you and the bedsheets.
When you’re staying in basic accommodations (think: youth hostel), this can mean the difference between a good night’s sleep or a fitful night where you’re worrying about what you’re sleep on (or in).
The sleep sacks I’ve used in the past have always been silk. This is probably because most of my backpacking days were spent in Southeast Asia where being covered in as little as possible was key considering hostels and cheap hotels rarely have air conditioning.
As I prep for the Snowman Trek in September, the trek where I’ll be spending 24 nights in a sleeping bag, in a tent, I decided I’ll need a bit of extra warmth while sleeping at, oh, 16,000 feet.
The Cocoon Thermolite Radiator MummyLiner is just the thing for that kind of environment. Slip this into a sleeping bag and it’ll raise the rating of the bag temperature by nine degrees celsius. (Sorry, only celsius is listed on the Cocoon website.)
I have tested this out and can say unequivocally that it works. I dunno about an increase of nine degrees celsius but when I slept it in, I woke up sweating on a spring evening. That doesn’t happen unless I eat two slices of chocolate cake right before bed. Success, I would say.
This lightweight sleep sack is made of Merino wool which not only keeps in the warmth but if it does get wet, it’ll dry quickly (50% faster than cotton). It’ll also keep you warm if it does get wet.
Definitely an item that’s getting packed away for that little hiking trip I’ll be taking. 🙂
What I Love
- Soft merino wool makes for comfortable sleeping
- Warmth without weight
The Cocoon Thermolite Radiator MummyLiner is available in Red and you can get it on Amazon for about $60.
Travel Well,
Beth
Disclosure: Cocoon sent this mummy liner to me for review. Regardless, everything I have said in the post reflects my honest opinions.
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