Product Description Upgrade your sleep system with our premium Sleeping Bag Liner — designed to add comfort, warmth, and versatility to any adventure. Available in two performance fabrics, each liner enhances your sleep setup while remaining lightweight and packable. Choose soft, stretchy knitted polyester for flexible comfort that moves with you through the night, or ultra-soft TENCEL™ lyocell for a smooth, sheet-like feel that naturally wicks moisture during warm, humid conditions. Both options provide breathable comfort and boost your sleeping bag’s warmth. Use it on its own as a lightweight sleeping bag for summer nights, or secure it inside your sleeping bag using the built-in snap loops for added warmth and stability. A drawstring cinch top helps retain heat, while the rounded foot box keeps your feet comfortably enclosed. Weighing just around 11 oz and packing down small, this liner is an easy addition to any backpacking, camping, or travel kit. Key Features Soft, Flexible Comfort: Available in stretchy polyester knit or ultra-soft lyocell fabric, offering smooth, breathable comfort with natural movement throughout the night. Versatile Use: Use on its own in warm conditions or attach inside your sleeping bag with integrated snap loops for added warmth and stability. Boosts Warmth: Increases your sleeping bag’s temperature rating by approximately 8–15°F for extra cold-weather comfort. Adjustable Heat Retention: Drawstring cinch top helps seal in warmth when temperatures drop. Ergonomic Foot Box: Rounded design enhances warmth and allows natural foot movement. Lightweight & Packable: Weighs just 11 oz (carry bag adds 12 g) and compresses small for easy storage and travel. Easy Care: Durable, compact, and machine washable—ideal for frequent trips and long-term use. Technical Specs Product PolyStretch Lyocell Best Use Camping, Backpacking Camping, Backpacking Material Knitted Polyester TENCEL Lyocell Added Warmth 8-15ºF 5-10ºF Weight 11 oz 12 oz Dimensions 72 x 28 in 72 x 28 in Packed Size 7.5 x 4 x 4 in 6.5 x 3.5 x 3.5 in