3
votes
2answers
184 views

Old Down Sleeping Bag performance

I hear that because down feathers are so delicate, a down sleeping bag that has gotten a ton of use or rough use has significantly less insulating performance -- the feathers are broken down into bits ...
2
votes
1answer
114 views

Will using a sleeping bag stop the body from adapting to cold?

The sleeping bag (at least as I've understood it) works in that way, that it uses the heat the body creates to create a layer of heat air between the body and the sleeping bag's border, therefore ...
2
votes
2answers
83 views

Thermal rating on vintage sleeping bags

These days, almost every sleeping bag sold is given a thermal insulation numeric "rating", either the USA version or the more accurate European version. But vintage bags did not have this industry ...