Sea to Summit Reactor Insulated Sleeping Bag Liner

So pleased with this purchase! I used it every night on a 10 day backpacking trip and it was great! It was an effective barrier from the nylon sleeping bag, so I didn’t stick to it and it was easy to clean when I got home.Also, it’s been great on other warm weather campouts when a sleeping bag would have been too hot.I think it’s definitely worth the spend!

An absolute must for campers. It is insanely comfortable and warm. I am wearing as I write this review. I was shivering in camp last night under my down blanket. I woke up and put this bad boy on and slept like a babe the rest of the night. Love it. I have the breeze one for summer as well.

Added at least 10 degrees to my sleeping bag and only added a little extra weight

This bag liner is nice and warm. Drawstring bottom is great for sitting around the fire and keeping your legs warm. The snaps and hood helps keeps wrapped around you while you roll around at night. Was out for a cold evening and usually sleep in my puffy. Ended up taking it off in the middle of the night cause the liner was keeping me extra warm.

Did not expect to like this thing since I have restless less and claustrophobia... BUT this is a wonderful piece of gear for my cooler backpacking trips.I have a sierra cloud10 down sleeping bag comfort to 25F, but we headed out for early Nov trip in upstate NY/CT border... temps down to upper 20s so didn't want to risk it. The liner didn't tangle around my legs, nice drawstring around my head and arm holes for functional access. Nice and toasty!!! Liner also served double duty as a leg warmer/blanket while making breakfast on a cold morning.Was skeptical at first, but so glad I bought this thing. Worth the extra ounces in the backpack!!

I used this during a recent 3 day competition where we had to carry all of our gear and camp outside. Winter storm was predicted so I got this to bolster my sleeping bag. It got down into the teens and we had 5”+ of snow one night. This definitely helped keep me warm, especially sleeping on an ultralight foam pad.Packs down small and doesn’t weigh too much for the warmth it provides.Probably way overpriced for what it is (someone with basic sewing skills could probably make this for half the price), but if you need some extra insulation that doesn’t get too much in the way of sleeping, this is a good purchase.

I bought this to use as a sort of sheet over a sleeping pad for a multi day trip in the Sierras where I used a few quits instead of a typical mummy bag. Worked great for this purpose, the liner has a very nice feel to it, much better than sleeping directly on a sleeping pad.

I’m a cold sleeper so I was a little worried when the temp dropped way lower than seasonal normals on my last backpacking trip. I have a 20 degree bag with temps at 36. I purchased this liner and actually woke up sweating! Not only that, but it’s functional- I wore it all morning since your arms are out and you can raise it to a comfortable level on your legs. I would buy again and can imagine using only this during the summer!