Soft to the touch, Sea to Summit's Premium Stretch-Knit Expander Liner delivers luxurious warmth and comfort as you sleep. Premium stretch-knit poly-cotton construction moves with you for maximum comfort. Antimicrobial treatment keeps you fresh all night long. Double-folded and -reinforced seams offer long-lasting performance. Extends the life of your sleeping bag by keeping it clean. Imported. Sizes: Regular (36"W x 73"L), Mummy (36"W x 82"L). Colors: Eucalyptus, Navy (not shown).