Sleeping Bag Liners
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How we choose: The best sleeping bag liners highlighted here were selected based on 46 reviews of 25 products. Our top picks are those that are readily-available in the United States and have received the highest overall ratings from reviewers.
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ALPS Mountaineering Microfiber Mummy Liner
I can't believe no one has reviewed these liners! This is one of the best liners on the market! I have two of these, and I've had them for several years. They cost less, are lighter, more comfortable, easier to get in and out of, and out-perform the Sea To Summit Reactor (I have one of those, also). I highly recommend this liner to anyone that doesn't have a liner, and also to those who have the Reactor and are ready for a better liner.
Reasons to Buy
- Inexpensive
- Lightweight
- Simple yet functional design
- Smooth, snag free material that has an excellent "next-to-skin" feel similar to silk
- Lifetime Guarantee
Reasons to Avoid
- The only "gripe" I can find about this product is very minor—the stuff sack is bigger and heavier than necessary.
--> Before I start the review, let's get the education and words to the wise out of the way: Always, always, ALWAYS use a sleeping bag liner! A sleeping bag is an investment, usually an expensive investment. The insulation in a sleeping bag, whether down or synthetic, has to be able to create dead-air space to keep the warm air in and cold air out. A bag's insulating efficiency is dependent upon its ability to "loft". "Loft" is the "fluffiness" of the insulation, and is what creates that dead-air space.
Read more: ALPS Mountaineering Microfiber Mummy Liner reviews (2)
Sea to Summit Reactor Thermolite Liner
True-to-spec 15°F of added warmth and lightweight make this bag liner a winner. It's better than my old silk bag liner in that it's lighter and the moths don't like it.
Reasons to Buy
- Warm
- Lightweight
- Packable
- Durable
Reasons to Avoid
- Pricey
I'll start by saying this doesn't seem to be a true "mummy" liner in that it doesn't have the traditionally small mummy footbox. That really doesn't matter — what matters most is that it's warm! In fact, I can't believe how warm it is and I'd swear it adds more that 15° F to your bag. I thought I liked my old silk bag liner even though I hated the way it always felt cold when I first crawled in. But, it kept me warm most of the time. Last winter, I didn't store my old liner in a cedar chest or with mothballs and the moths had a field day with it.
Read more: Sea to Summit Reactor Thermolite Liner reviews (10)
Sea to Summit Premium Silk Travel Liner
Perfect for traveling and staying in hotel conditions where they use harsh laundry soaps.
Reasons to Buy
- Lightweight
- Soft
- Mummy has a hood to protect head
Reasons to Avoid
- Mummy sack is difficult to extract from
I purchased this Sea to Summit item on a recent trip to GA to use to give me a barrier to the harsh laundry soaps used in the hotel I was staying in. I have travelled for a couple of years with a larger lightweight sleeping bag, but it was taking up too much space in my one piece of luggage. This was an expensive switch to a newer lighter weight and smaller solution, but one I am happy to say was a perfect solution for someone like me with a skin allergy issue that rears its ugly head every time I travel and stay in a hotel.
Read more: Sea to Summit Premium Silk Travel Liner reviews (2)
Sea to Summit Reactor Plus Thermolite Liner
Limited warmth, but soft and comfortable to sleep in.
Reasons to Buy
- Soft fabric
- Quality build
- Adds some warmth
- Nifty stuff sack
Reasons to Avoid
- Heavy for warmth delivered
- Expensive
- One size fits all
I bought this product last winter to help out the warmth in a cheap sleeping bag, which it did slightly. Sea to Summit claims it will improve warmth up to 25 degrees F. I would guess this liner adds maybe 10 degrees of warmth. I'm a big fan of Sea to Summit products in general, some seem a bit gimmicky or overbuilt but everything I've seen is well made, quality stuff. And this liner is no exception. The liner is basically a soft fleece/flannel sheet, and it feels great on the skin. It's plenty long at 7 feet, and the material could probably be stretched even more to accommodate the average NBA player.
Read more: Sea to Summit Reactor Plus Thermolite Liner reviews (3)
Explore more top-rated sleeping bag liners from Sea to Summit:
Lifeventure Silk Sleeping Bag Liner
A ightweight and compact liner that improves insulation and protects the inside of a sleeping bag. Can also be used on its own for really hot muggy nights.
Reasons to Buy
- Lightweight
- Compact
- Comfortable
- Cost
Reasons to Avoid
- Snags easily
- Not for vegans (boiled silk worms etc)
I always use a liner as part of my layered sleep system. Foremost, it gives the inside of the bag a degree of protection, especially on longer walks where access to washing facilities is limited. Additionally, it actually does improve the insulating properties of a sleeping bag by a couple of degrees —I really notice the difference with and without, so it is a cheap and effective way to get the best out of your sleeping bag. Equally, in really warm and muggy nights I just sleep in the liner which I find very comfortable. It is mummy shaped to fit the inside of a bag neatly.
Read more: Lifeventure Silk Sleeping Bag Liner review (1)
Jag Bags Silk Sleeping Bag Liner
Reasons to Buy
- Keeps the inside of the sleeping bag extra warm
- Keeps the inside of the sleeping bag clean
- Lightweight
- Great for hotels and hostels to fight against bed bugs.
- Great against insect bites
- Comes in cool colors
Reasons to Avoid
- None so far that I have noticed
I got this originally for a cross-country travel as I was going to be in a car half the time and in hotels the other half of the time. I got it to have the ability to have a great, warm night's sleep no matter where I ended up on my travels. This has multi-use functions and is great for camping, car camping, hotels, hostels, etc. I would suggest to pick one up as they are not that expensive and great to have around even if the heat in your apartment goes out for a day or two. So many uses and a must have!
Read more: Jag Bags Silk Sleeping Bag Liner reviews (2)
Equinox Vapor Barrier Liner
This product is well constructed and performs extremely well. It is lightweight and well worth the additional weight in the winter setting.
Reasons to Buy
- Keeps bag dry
- Increased performance from sleeping bag
- Packs easily
Reasons to Avoid
- Hard to get use to sleeping in
I have ventured into winter backpacking and after my first three-day trip and an extra 10 pounds to my pack gained from my sleeping bag a barrier was in order. Originally going to make one, but this one made of the same material I had gotten design for and I could not make it for that price. Well constructed and keep my bag dry and keeps me dry and warm. Compared to my first trip I was much drier and warmer using this vapor barrier than no barrier. Little hard getting used to sleeping on the material which was the only hurdle to overcome.
Read more: Equinox Vapor Barrier Liner review (1)
Columbia Omni-Heat Sleeping Bag Liner
Magical little silver dots in a lightweight package in a 10 oz. large grapefruit package promise added warmth. And those little silver dots pretty much deliver as advertised. In my last overnighter I was comfortable at 55° using a 40° under quilt in my hammock.
Reasons to Buy
- Compact
- Mid-weight
- Extend the temp range of a bag or top quilt
Reasons to Avoid
- Price
- Possible closeout
After a little experimentation I'm pretty convinced that those little silver dots are a welcome addition to the bag liner. I really hate to perspire while I sleep. It makes for a long night that usually ends around 4:30 for me and makes the morning somewhat less enjoyable, at least until I'm up and around for a while. So the breathable nature of this liner really helps with that and those little silver dots appear to do a nice job of adding warmth to the simple sleeve of cloth. Since it is a sleeve it is not as hammock friendly as I would like and this fall I plan on modifying the liner by cutting a horizontal slit across the bottom of the bag similar to what Therm-a-Rest did with its Haven bag.
Read more: Columbia Omni-Heat Sleeping Bag Liner review (1)
Cocoon Expedition Liner
This liner is super lightweight and the material feels nice and smooth. Keeps skin oils and dirt off sleeping bag, but I didn't find it to add much warmth.
Reasons to Buy
- Lightweight
- Keeps skin oils and dirt off sleeping bag
- Ripstop silk
Reasons to Avoid
- Doesn't add much warmth (adds maybe 1 degree F of warmth)
- No zipper for easy access
This liner is super lightweight and the material feels nice and smooth. I bought it as a light way to keep skin oils and dirt off my sleeping bags. It has a storage bag sewn to the chest area, which is nice so you can't lose it. It stuffs easily inside this pouch when you want. There is no zipper, which I like for the weight savings, but it isn't as easy to get into as liners with a zipper. That being said, it is still easy enough to slide into the liner as the material is very smooth. Some people absolutely claim it adds warmth to a sleeping bag, but I did not find this to be significantly effective.
Read more: Cocoon Expedition Liner review (1)
ALPS Mountaineering Butterfly
Maybe one of the best things I've ever stumbled upon! Went camping a few weeks back in below 20 degree temps. Hey, no problem I got an external framer just chunk some more stuff inside and strap more out. So that meant I brought a fleece blanket that weighs damn near close to the same as this "liner", and enough clothes for a refugee camp in Siberia. Long story short, I was plenty warm in my 32 degree bag + blanket + 2 LJs, Cords, and soccer warm up pants + about same set up for upper body.
Read more: ALPS Mountaineering Butterfly review (1)
More Reviews of Sleeping Bag Liners
Trailspace reviewers have shared 46 reviews of 25 different sleeping bag liners.
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Other Types of Sleeping Bags and Pads
Find more sleeping bags and pads reviewed in these related categories:
Cold Weather Sleeping Bags (below 0°F)
3-Season Sleeping Bags (0° to 32°F)
Warm Weather Sleeping Bags (above 35°F)
+4 more types
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