A body hugging yet stretchy knitted Snugpak Thermalon Liner will significantly boost the thermal properties of your sleeping bag when temperatures drop. This is a popular choice and with good reason, it offers so much extra warmth. A strong wicking action ensures comfort while its soft wool like touch gives an instant sense of warmth. Weight: 17oz Pack size: 9 x 5 in A body hugging yet stretchy knitted liner Strong wicking action Easy to wash and care for Lightweight and compact Offers so much extra warmth