• Antimicrobial fabric sleeping bag keeps user comfortable throughout night;• Sleeping bag liner has 39.4 in. opening on one side for easy entry;• Can be used alone as sleeping bag to separate dirty things, or used as liner in down sleeping bag or as hotel sleeping bag;• Lining made of high quality polyester with silky texture that makes it soft and comfortable against skin;• Fabric will not wrinkle, fray or fade, and can be used for long time;• Lightweight and compact: just 20.21 oz;• Sleeping bag liner can be folded into handy 8 in. x 8 in. pocket when not in use;