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Your cart is empty.The Snugpak Thermalon Liner offers additional insulation and warmth to any existing sleeping bag. The Thermalon Liner’s knitted polyester construction is designed to be stretchy and gently hug your body to prevent heat from escaping. The liner’s dimensions are 65 inches long by 22 inches wide to deliver a snug fit that ensures warmth isn’t lost and remains close to its source. The Thermalon Liner is incredibly soft to the touch and wicks any water away from your body to keep you dry. To prevent the liner from twisting within a Snugpak sleeping bag, secure the liner using the Tie In Loops near the feet to attach the two together. A compression stuff sack is included so you can pack the liner down to a travel-friendly 8 inches by 5 inches. The Thermalon Liner will boost the thermal properties of your sleeping bag to keep you warm and snug when the temperatures drop
ERIC
Reviewed in the United States on February 26, 2025
Fabric is soft and stretchy. Climbed in and quickly felt the heat being retained. Seams and stitching look clean. Easily fits back in stuff sack. I am about 5'11 and 225 lbs and it covered up to my neck and was plenty wide enough. Be advised the picture and description don't match, this item does not have the advertised tie outs to fasten it securely in a snugpak sleeping bag.
Sherry
Reviewed in Canada on March 11, 2022
I love how this can be added to any bag to keep it clean, and add warmth.
Mattq
Reviewed in the United Kingdom on November 3, 2022
Lightweight and packs up small. Feels like it's made of t shirt material. As it is rectangular it doesn't do too well in a mummy bag as it scrunches up around you. But at the end of the day if you need extra insulation and your standard bag is not good enough anything is better than nothing. Could also be used on its own in a hot climate.
Mr. Karl Williams
Reviewed in the United Kingdom on April 28, 2022
Great item, ideal for my sons Duke of Edinburgh expedition trip for the cold nights. I would highly recommend
Travis s.
Reviewed in Canada on December 17, 2021
Really good quality and a great price. Used it standalone and with a bag. Tight fit but very stretchy
RORY TAYLOR
Reviewed in the United Kingdom on January 17, 2021
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SomeRandomGuy
Reviewed in the United States on April 21, 2021
after reading the reviews you would think it's just an oversized walmart tshirt sewn into a sleeping bag. but it's completely different. ultra ULTRA soft. "body hugging" to me reads like "claustrophobia", but instead, it's not restrictive at all because of how much it stretches, you forget it's there. you can tell the warmth increase right away when you add it to a bag. the most surprising part is the thickness and weight of this product. very THICK and HEAVY. which doesn't bother me one bit. not a cheap paper thin useless material. wicking as well for when you have too many skin areas touching "plastic" (feeling) material as with 80% of camping gear. great way to ruin a night if you're sweaty and hot. price is amazing. i'm very satisfied with this product and would definitely recommend. love snugpak gear ;never disappoints
MGV
Reviewed in the United States on December 24, 2018
This is a very compactable item which is important for backpacks. It is a liner that will provide your current sleeping bag with added cold weather protection.
Rd Plasschaert
Reviewed in the United States on January 21, 2018
I have been constantly using this product. It is phenomenal.I intend to buy 2 more for my own convenience and ease.
Customer
Reviewed in the United States on April 10, 2017
I ordered this for my wife's "get home bag", and yes, you get exactly what it looks like. It's basically t-shirt material sewn into a rectangular sleeping bag. I chose the rectangle shape over the mummy shape because it would be more comfortable if you had to use it outside of a mummy bag than the smaller shape would be. If you put this inside a mummy bag, you'd have extra material, (which might be annoying), but in my mind, the versatility outweighs the extra material if the situation called for it.As to fit, I climbed inside and it was comfortable against my skin, and came up to my head no problem. I'm 5'10". I had MORE than enough width in the bag, so if you're a bigger person, it will still be comfortable. Put this inside your bag, and expect an additional 5-10 degrees of cold ability from your bag with the added "dead space" the material provides.Snugpak is a great company, that makes great products. They're a British company, and take pride in their work.
Cypheros
Reviewed in the United States on November 18, 2016
I use this whether I need it or not. It does provide a measurable boost to the insulation properties of any sleeping bag...The best part, though, is that this thing feels like a regular blanket.
MikeInWeston
Reviewed in the United States on December 8, 2015
I'm 6'1" 260 lbs and this fits even me. It is very stretchy. The think I like about it is that I don't have to carry the largest sleeping bag so am ready for a wider range of temperatures without all the bulk. The compression stuff sack reduces this to the size of a softball or slightly larger.
Scott
Reviewed in the United States on January 25, 2015
I tried it out when it was sub-freezing temperatures. My sleeping bag is rated to 5 degrees celcius(around 40 F)...Combined with the liner....I had to unzip the sleeping bag. It's soft, very comfortable, and they say it's "body hugging"....that's no joke. But it's very comfortable, and I'm rather slim.
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