Therm-a-Rest Slacker Hammock Warmer Lightweight warmth: reflective therma capture Coating redirects radiant heat back to you with Minimal Bulk Easy set up: simply hang under any single or double hammock and feel the warmth immediately Versatile: can be used on its own in fair weather or over an under quilt for maximum warmth Ultimate comfort: add the slacker hammock bug shelter and slacker hammock rain fly for serious overnights in cool weather Made in the USA of the finest US and global materials