Ready for beach camping! As the beach is cold in the night is SO COSY! the comfort on this liner was amazing. The packability on it, doesn’t add too much space in your beach bag! Fits amazing with you outfit at night and great reflector! Looks like it’s going to have good durability for multiple camping this year! Absolutely recommended.😍

I bought this bag to help make my 0° bag warmer for alpine fall camping. This weekend it got down to 5C and I was comfortable the entire time. I was warm and dry, plus my smoky BO didn't impregnate my down sleeping bag. I can't believe I went camping without a liner for so long.

Add this nice little lightweight addition to your kit

This little guy is an awesome way to "Pack Light, Freeze at night, but at least you'll make the hike" for all you infantrymen out there. This will take a crap issued sleeping bag and make it comparable when supply says their out of cold weather gear or make an ultralight sleeping bag into a normal Weighted bag without dropping hundreds more on repetitive gear. Great addition to any camping loadout.

Excellent Layer For Cold Nights

I wanted something I could use during the early camping season in the high country and desert of the Four Corners Region and this works perfectly. I have a double wide 30 degree sleeping bag that I use and in the early spring it still gets cold in the lower mountains. Even in the desert there are cold nights and Im tired of sleeping in my skiing base layers these nights. I've used this liner three times now and love it. The first time was in early April in the desert and it got down to 42 at night. I was very comfortable in the sleeping bag by myself with the liner on. It was a little difficult in the middle of the night when nature called but I managed. The second time I used this was around the end of April and beginning of May at an elevation of 7,000 and lows of ... MoreI wanted something I could use during the early camping season in the high country and desert of the Four Corners Region and this works perfectly. I have a double wide 30 degree sleeping bag that I use and in the early spring it still gets cold in the lower mountains. Even in the desert there are cold nights and Im tired of sleeping in my skiing base layers these nights. I've used this liner three times now and love it. The first time was in early April in the desert and it got down to 42 at night. I was very comfortable in the sleeping bag by myself with the liner on. It was a little difficult in the middle of the night when nature called but I managed. The second time I used this was around the end of April and beginning of May at an elevation of 7,000 and lows of high 40's. Once again it worked great and was easier to use in the middle of the night. The key was to fully release the feet cord. The last time I used it was just a week ago in the desert with lows of mid 50's. This time I used my hammock & blankets along with the liner. I was warm and comfortable all night. Overall I love this liner and it meets all my needs for a comfortable nights sleep.

Extra layer of warmth and acts like a sheet!

I get cold easily. I pair the reactor liner with my Basecamp II sleeping bag when temps drop a bit too low for my liking. Conversely, if it's too warm, I have a tendency to sweat a little, and this liner does a great job at wicking moisture and feels like a sheet inside my sleeping bag. I can throw it into the wash at the end of a trip. It helps to keep my Basecamp clean inside too. Also great fora little blanket while sitting next to the campfire !One great improvement would be the ability to zip the liner into my sleeping bag, or tabs to hold it in place somehow. When I turn over in my sleep, the liner has a tendency to roll with me. Sometimes it gets a little jumbled up inside the bag, but not terribly so. I could clip the ends inside the bag with generic ... MoreI get cold easily. I pair the reactor liner with my Basecamp II sleeping bag when temps drop a bit too low for my liking. Conversely, if it's too warm, I have a tendency to sweat a little, and this liner does a great job at wicking moisture and feels like a sheet inside my sleeping bag. I can throw it into the wash at the end of a trip. It helps to keep my Basecamp clean inside too. Also great fora little blanket while sitting next to the campfire !One great improvement would be the ability to zip the liner into my sleeping bag, or tabs to hold it in place somehow. When I turn over in my sleep, the liner has a tendency to roll with me. Sometimes it gets a little jumbled up inside the bag, but not terribly so. I could clip the ends inside the bag with generic plastic duvet clips and that would solve it.

Keeps you warm!

Honestly, I had no idea these existed until this campaign. I thought I was selecting an actual sleeping bag! Regardless, my husband loves this product, we went out last weekend and it worked perfectly for him, since he loves to sleep warm. In his words, "This is something I didn't know I needed, but now I can't live without!

Light liner to keep bag clean inside

This liner is soft and stretchy, and well sewn. It is thin and good as a liner, but not for adding much warmth. The openings are helpful, but how much weight would a 36-48 inch zipper actually add? It’s pretty light, but a liner with a zipper would be better, and ease getting in and out.

Not For Me But My Husband Likes His

I was hesitant to leave this review but honest reviews are important and everyone sleeps differently. | did not like sleeping in the liner, I found because it was polyester I sweat and was uncomfortable. I was hopeful because my husband has the warmer Reactor liner and uses it in the colder months and likes it. I had to move to a merino wool liner.

Sleeping bag protection

Comfortable sleeping bag protection plus add warmth. After a grimy day of hiking or biking and not being able to shower the sleeping bag liner is not only comfortable but keeps my expensive sleeping bags clean and in good shape. Easy to eat a liner after each trip and because of it I've never needed to wash a sleeping bag

Unique and multi functional.

It is quite toasty!You can leave the foot end open, pull it over your head like a shirt, put your arms through the holes, then close the foot end with the draw cord. Hood also has a draw cord.Armholes have snaps to open up the whole top end.