Sleeping Bag Liners

The cheapest way to make a sleeping bag warmer. A Reactor Midweight adds up to 11°F to your sleep system for about 12 ounces, which is a far better...

The warmest liner Sea to Summit makes, and the one worth carrying if you are pushing a three-season bag into shoulder season. Up to 14°F of added w...

Not a warmth liner. The Breeze exists for the opposite problem: nights too warm to be in a bag, hut and hostel beds you would rather not touch, and...