ALPS Mountaineering Sleeping Bag Liner

It's what I expected it to be, either a thin sleeping bag that can be used on its own or a liner to be used inside a thicker sleeping bag. It feels like bed sheets stitched together to form a sleeping bag.

Great item fit in sleeping bag without being to tight or having excess. Makes cleaning sleeping bag easy

Not sure about this purchase. Some reason I thought the mummy version would open along the side. But this is basically a big sock. You climb in to this thing.It’s soft for sure. Has a decent amount of room. Biggest issue is only one way to get into it.

This worked very good. Added a bit of warmth to the sleeping bag and of course avoid it getting dirty

Cheaper than the sea to sumit brand but very good. Feels just like a microfiber bed sheet. Worked very well with a 30 degree marmont tressled elite that is confort rated to 38 at philmont. It was not even most likly needed for philmont.

I thought it would be a flece bag to keep me warm. But it wasn't even a soft material. It felt like plastic. I returned it.

Others complain about lack of fleece or how it will not help with warming them. I used mine in 0 degree weather in a 20 degree bag and stayed cozy warm. The added layer aiding in trapping body heat was all that I needed. It is compact and most importantly aids in keeping very costly down sleeping bags clean on extended thru hikes.

I was hoping this would provide a bit of extra warmth when using with my sleeping bag, however upon receiving it became clear that this would not provide any additional insulation whatsoever, just act as a barrier between my body & the bag. Imagine if you took the top sheet off of your bed & sewed it into the shape of a sleeping bag - that's essentially what this is. This could be what some people are looking for, but not me, so I returned it in exchange for a sea to summit thermolite liner.