Sea to Summit Toaster Fleece Mummy Liner

This thing is AWESOME. I have a 41 degree down synthetic bag and it normally will keep me fairly warm. We just went hiking this past weekend and I knew it would drop close to or below 41 degrees (especially at the higher altitude on the mountain) so after scrounging around Amazon and BackCountry, I found this and decided to make the purchase. While we were in the tent, it dropped around 40 degrees with a very consistent 10mph wind that made the temperature at least in the mid 30's or lower. I have to say, this liner did WONDERS. I was incredibly warm the entire night and definitely gave my sleeping bag at least 15 or more degrees (I was on a Therm-A-Rest mat as well). The liner was comfortable and soft as well.The only caveat I have is that if you are bigger/thicker than average size, you may be a little squeezed in this, as the liner has to be slightly smaller than a normal bag. I'm fairly average male size at 5'7" and it was just right.

Good liner for the money, although I bought it to use as a summer sleeping bag. I use a military patrol bag during the summer since I don't mind the extra pound vs spending hundreds on a fragile down bag. The issue was I was getting far too hot in one of those, so why not shed a pound, stay warm on the cooler summer nights, save space, and not sweat like hell through it all. This should be perfect alone, and I wouldn't say too terribly bulky, it's as round as roughly a 2L bottle of soda but far shorter, about a coffee can in height. It can be compressed down a little more if you use a different sack with straps going around it. Overall it's perfect for what I need, should work well with a Neoair mattress on those cool rainy mornings in the summer.

I bought this for you in the three layers Sleep System we are issued in the Army. I had to go out on a two-week field exercise, the second week of which had a forecast of 20° at night. The sleeping bags we are issued feel like cold plastic when trying to get into them. This fleece liner made it so much easier to be able to get into the sleeping bag at night and get warm. I would give it a fifth star if it weren't for the fact I seemed to have issues with the zipper. Overall, with the money. I have no regrets as it made the nights more bearable.

I’m 5’10 with a muscular build and this fleece is a great size. It should keep you nice and toasty in the 50’s (Fahrenheit) on it’s own with a good sleeping pad. The bag it comes with is pretty useless and cheaply made. Mine ripped before i took it out in the trail. I’ve used mine while hammock camping with a substantial self-inflating sleeping pad with a 5.3 r value. I’ll definitely take this out again now that I have a better stuff sack.

I used this while backpacking in Co sangre de cristo mountains elevation around 11000 Ft. Used to add additional warmth to my North Face 40° sleeping bag. Kept me comfortable at below freezing temperatures.

Kinda like wearing a favorite pair of jammies, the toaster microfleece mummy liner is soft, warm, and a must for winter camping and napping.With this liner, I am TOASTY in my 20 degree bag at 20, and comfy down to close to zero. Doubles as an awesome throw for the couch - it's plain and black, and looks like most any other fleecy blanket.

This liner is about what you'd expect. It adds noticeable warmth when used inside of a sleeping bag, without reducing overall comfort. I also lent it to a friend once when he forget to bring a sleeping bag on a camping trip. I'm 6'3" and 180 lbs and the size was adequate for me. If I were alot heavier (like 50 lbs heavier) then I would have wanted something roomier.

I just needed a little extra something for my 20 degree Marmot mummy bag. Does the trick for mild winter camping...and by mild I mean below freezing, snow on the ground, sleeping in my layers. I'd say it gave me 15-20 degrees. Wouldn't count on it for subzero protection with your bag, but if you are that serious about winter camping, you hopefully have a -20 degree bag. I would say it's worth the money.

Not much to say. It's basically a thin sleeping bag made from fleece. Great for camping on hot climates as it's cooler than a bag, and good for colder climates to go inside the bag. If you have a well fitting, appropriately sized bag though, it won't be necessary.

great, soft and much warmer...recomend instead of upgrading to a bulkier sleeping bag...try this first

This product is great, fits snuggly into any sleeping bag, and keeps you really warm when tempretures plummet. Comes in a great storage pack so it is easily stored.

I love my fleece liner - smaller than a sleeping back when you have limited space and my cosy than a 'thin' sleeping bag!

I use this as a deluxe sleeping bag liner, with a down sleeping bag. It makes a very warm combination, and keeps the down bag clean. With its full length zip, it's far easier to crawl into than a silk liner. It's warm enough to use by itself in summer conditions, and good for sleeping over at people's houses. It's easy to machine wash, and dries quickly.The only downside is, that it's almost as bulky as the down bag itself. That's not a problem for car camping however.