Rab Silk Sleeping Bag Liners

I wasn't talking about abrasion, unless you went with something like a 7D fabric it should be plenty durable. My point again is protecting and preserving your insulation. I use an Argon (Nylon) quilt liner because I would rather not have to wash my down gear regularly and it works wonderfully in warmer weather. The more you compress and wash an insulation medium (synthetic or down) the sooner it breaks down. When synthetic fibers or GD/DD breaks down you lose loft, when you lose loft you lose insulation/warmth. I would also venture that my quilt liner weighs less than any pair of silk pajamas you could locate.

I love my silk cocoon liner! I bought it for camping, but now I use it while traveling now too! Such a good purchase!