b.m.c Bundle Monster | Sleeping Bag Liner Travel Sheet Camping Sleep Sack | Lightweight, Compact, Zippered Microfiber Fleece | Add Up to 10F Extra for Cold Weather Climates |Soft, Warm & Cozy EXTRA WARMTH: Boost your sleeping bag insulation rating up to 55 degrees w/ this liner TRAVEL FRIENDLY: Use as a mummy sleeping bag liner, camping sheet, or unzipped as a travel blanket to keep the bed bugs out ULTIMATE COMFORT: Travel sleep sack made with lint-free, non-abrasive, and hypoallergenic MICROFIBER material ZIPPERED: Connect multiple travel sheets for roomier sleeping bags or zip 3/4 as a single, mummy sleeping liner DETAILS-- Full size: 69 in x 29 in (LxW); Compact: 6 x 12 in (LxW); Weight: 1.4lbs; Temp: 55 degrees; <span class="a-text-bold">During warmer weather</span>, this bag <span class="a-text-bold">can be used as a lightweight sleep sack</span> on its own. <span class="a-text-bold">In colder weather</span>, these microfiber fleece sleepong bag liners are even <span class="a-text-bold">comfier and safer than silk sleeping bag liners</span>; our camoing sheets <span class="a-text-bold">reduce your chance of sweating which can cause hypothermia and illness</span> in extremely cold weather. backpackers campers adventurers travelers expats world explorers businessmen and business women just about anyone who wants to stay comfy