Sea To Summit Reactor Extreme Thermolite Mummy Liner

2024-01-20T19:00:00

This liner is extremely versatile since it is comfortable by itself and increases the warmth of my 30 degree sleeping bag. The material is soft and good next to skin. I use it both couch surfing and when climbing.

Patrick K.

Originally posted at

2023-12-28T19:00:00

Where has this been all my life? My Boy Scout camping trips, field exercises in the Marines, and countless backpacking trips would have been so much more comfortable! Adds a noticeable bit of warmth, but the best part is that it feels like I'm sleeping in my sheets at home, rather than inside of a nylon bag. Love it!

Matthew R.

Originally posted at

2023-12-28T19:00:00

Light weight, soft and warm. Should work great as an additional layer in my system.

Kevin S.

Originally posted at

2023-12-27T19:00:00

Cozy without being heavy

Jackie T.

Originally posted at

2023-12-26T19:00:00

This liner is awesome. I adds warmth, and saves me weight as I don't pack my zero down bag. I just take my lighter sleeping bag and this liner! I've used it inside my bag on hut trips when the hut is freezing at night in the winter, and on its own in the summer! It has become an all season add on for me. I am 5'4 and 120 lbs and there is plenty of room in there for me.

Chloe C.

Originally posted at

2023-12-14T19:00:00

I went to Central Idaho for a seven day, six night elk hunt. Temperatures were projected to drop into the teens and low 20s most nights. My Kelty sleeping bag is rated to 20 degrees, but as we all know, that is not the comfort rating. I purchased this liner hoping it would give me the warmth I needed each night. It worked great. There was not a single night when I felt cold. Instead, I was truly warm.

Brandon

Originally posted at

2023-12-10T19:00:00

This thing is great for an added layer of warmth. It is lightweight and feels like a sheet inside your bag or quilt. Not sure yet on how much it adds thermally, but is good to fill those gaps around you to improve the bag's efficiency. Is it a placebo effect? With it being as thin as it is, it does make you feel warmer by having more fabric contacting your skin. It also helps keep the bag/quilt cleaner which is a huge benefit.

Wade S.

Originally posted at

2023-10-15T20:00:00

I was expecting the traditional fleece. It did add some warmth and it saved me from freezing in my 30 degree bag when the temperatures dropped to the 20s on a recent trip. But I was still cold. I don't want to return it because it's a hassle and it does work but I didn't see much difference from my regular western mountaineering liner and this one.

Fabexplores

Originally posted at

2023-10-06T20:00:00

Warm. Soft. Comfortable. Great addition to shoulder season camping

Daniel R.

Originally posted at

2023-10-05T20:00:00

Excellent liner. Was great on a warmer night where I used just the liner. So soft it's like sleeping in your bed. Love it.

Jeff H.

Originally posted at

2023-09-15T20:00:00

Amazing product. So simple and so darn good. The size and the impact make it amazing. Super compact and effortless results. Comfy and cozy Thanks

Howard S.

Originally posted at

2023-09-12T20:00:00

In Colorado, even summer nights can get cold. It's good insurance to have the ciompact liner when the temperatures dip and the summer sleeping bag isn't enough.

Allen F.

Originally posted at

2023-09-09T20:00:00

Perfect for what I wanted the piece of gear to do. I am a believer in layering for my clothing, and this works the same for my sleep system. Use it by itself on hot/warm nights or for added warmth in my sleeping bag for colder times.

Gregory K.

Originally posted at

2023-07-11T20:00:00

we used the liners on our 2 week trek in the Andes. Excellent stuff!!!!!

Marius C.

Originally posted at

2023-06-27T20:00:00

Really does add more heat to your bag super comfy

Evelyn G.

Originally posted at

2023-06-25T20:00:00

This The best I've ever used as far as having something more inside of your sleeping bag to keep you warm

Pouya P.

Originally posted at

2023-06-20T20:00:00

Does what is designed to do. I also like to use it for warmer nights as a stand alone bag. Works great light easy to carry on hike or bikepacking.

Mike B.

Originally posted at

2023-06-20T20:00:00

Definitely worth a bit of extra space. It's super compact and adds extra warmth and keeps the sleeping bag clean. It can also be used by itself on hot summer nights

Jackie B.

Originally posted at

2023-05-11T20:00:00

This liner is smaller than a soda can which is essential for backpacking. Did not believe this would work at first. Now, I carry it on all cold weather trips. The layer does help keep ya warm! It has also held up well with washes and monthly use.

Jeremy

Originally posted at

2023-04-27T20:00:00

I have used this item on 4 seperate trips to Zimbabwe, and countless camping trips here in Texas. I went with a cheaper sleeping bag and added this liner! The movement in the bag is awesome! Packs down small too! 5 stars!

Jason H.

Originally posted at

2023-04-01T20:00:00

It worked wonderfully on the Appalachian Trail! It was freezing and this liner was a game changer

Annamaria W.

Originally posted at

2023-03-07T19:00:00

Love the sleeping bag liner, really did make camping on a cold night much more enjoyable! Light weight and a a great layer to add while camping in the cold.

Megan B.

Originally posted at

2023-02-26T19:00:00

I bought it for my son and he says it is as advertised, considerable warmth added to his sleeping bag.

Jason S.

Originally posted at

2023-02-04T19:00:00

Bought it for my son that is using it for the first time camping this weekend, hence the only 4 star rating. Seems well made and stitched and appears it should work as advertised. Will update this review after he returns.

Jason

Originally posted at

2022-12-31T19:00:00

Love this liner. Used it with my Marmot 15*F bag in 10*F weather. Was warm and toasty all night.

Dean W.

Originally posted at

2022-12-13T19:00:00

Lightvweight and compact. Tried it and it can stay warm in still condition. If you need to keep warm in windy or winter condition, put on a sleepbag.

Jingchao B.

Originally posted at

2022-12-13T19:00:00

I bought this for a motorcycle camping trip in southern Utah over thanksgiving. The weather was colder than usual This kept me warm and cozy. This liner made my 20 degree bag onto a 5 degree bag. It packs down small, easy to get in and out of.

Michael m.

Originally posted at

2022-12-13T19:00:00

Purchased for a winter Boy Scout backpacking trip that I knew was going to be extra cold. Had never used a liner before and had no idea if it would actually help. However, the temperature dropped to the low 20's and I stayed toasty warm all night. The liner acts like a big stretchy sack which I initially thought would be annoying, but barely noticed it once I got in. Admittedly, snaking into the liner while in a small tent was a challenge but it was not the liner's fault.

JIm R.

Originally posted at

2022-11-30T19:00:00

Excellent product and I can't wait to get winter over with so I can get outside here in Alaska to use it on extended camping trips!

Ricky M.

Originally posted at

2022-11-29T19:00:00

Definitely helps me keep warm and keep my sleeping bag clean of moisture and smell! Highly recommend this liner for anyone who wants a multi-season sleep system or just wants to sleep warmer. Wish the liner was a bit lighter but the extra weight is worth it!

Joshua D.

Originally posted at