Rated 5 out of 5 by ToddfromIdaho Great liner
The sea to summit thermolite liner is an amazing product. I just bought a new one because I gave my old one away after loaning it out. It kept me and other climbers and hikers warm at night for a few years and still is. Great product.
January 1, 2015
Rated 5 out of 5 by bebbe like a summer sleeping bag
This liner is excellent. The opening is large and stretchy, letting you get in and out easily, though it is at the end, not the side.
The material is just warm enough that in NY state in July, it was all I needed.
I know it will be great with my real sleeping bag when it gets colder.
August 4, 2014
Rated 5 out of 5 by FreqBizTravlr light and warm
worked perfectly with a 40 degree sleeping bag on a sub 30 degree night. light, warm and good quality. fabric is super thin but appears to be sturdy.
October 31, 2013
Rated 1 out of 5 by gordon7 very poor stitching
I bought this for my AT hike nest year. Took it out of package and the stitching at the drawstring was already undone about an inch. If I started using this all the stitching would come undone making this near useless. If the Thermolite Reactor ever goes on sale I'll try that one out instead. Inspect stitching closely
October 30, 2013
Rated 5 out of 5 by arab warm!
Used for a Boy Scout camping trip in Jan. Husband has a decent sleeping bag but needed to add some warmth since temps were going to go below freezing at night. He said he loved it and it definitely did its job!
January 23, 2013
Rated 4 out of 5 by UNHwildcat Liner
The liner does not seem like much, but I used it this past fall in the ADK and found that it did keep me warmer. At times I did have my arms outside the liner, but in the sleeping bag and noticed a difference in temperature when I pulled them back into the liner.
December 30, 2012
Rated 4 out of 5 by scotland08 Liner
This liner makes a synthetic sleeping bag much more comfortable and keeps the chill away.
October 30, 2012
Rated 4 out of 5 by Philmontcamper liner
Used this liner during our Philomont NM trek. Used as a sheet when warm and in the bag when cold. Lighter\smaller than extra sleeping clothes. Can't wait to try in cold northeast camping in fall. Very nice!
August 7, 2012
Rated 4 out of 5 by debmonster Warm and light
I've been using this sleeping bag liner for almost 3 years and find that it's an excellent way to extend the comfort range of my summer sleeping bag when it starts to get into colder temperatures. The liner does seem to add at least 10-12 degrees of warmth, letting me use my 32F degree bag down into the mid to low 20F degree range, with lightweight merino wool long johns for sleep clothes. It's so lightweight and packs so small that I'll often bring it with me on multi-day backpack trips as a "just in case" item for unforseen cold weather. The material has held up very well and shows no sign of wear and tear over the years. It's very soft and comfortable and feels much nicer against my skin than the nylon lining of my sleeping bag. The liner is mummy shaped and fits very well inside my mummy shaped sleeping bag, but I don't feel constricted. Granted, I am only 5' 6" and weigh approx. 145 lbs, so someone much larger than me may not feel the same. I have also used it in place of a sleeping bag on very warm and humid summer nights when I just need a light cover. I would definitely recommend this item, since it is much less expensive and lighter than buying another sleeping bag for colder weather.
November 2, 2010
Rated 2 out of 5 by NHSteph Dissapointed & returned
I really never gave this a real chance but upon opening the package, I was unpleasantly surprised how thin the material was & doubted this would give me the extra 15 degrees of comfort that it purports to do. I was also concerned about how this liner would get "twisted" while trying to sleep in my sleeping bag.
So I decide to return it & as usual, Bean was great at accepting the return. I then found a warmer sleeping bag to buy at Beans to replace my old worn out one, which I did for only $10 more than the cost of this liner.
If these sold for half the present price, I might recommend this, but as such I would recommend saving your money & buying a new sleeping bag.
May 12, 2010