NTK Viper Lightweight Sleeping Bag for Adults | Hybrid Shaped Ultralight Camping Sleeping Bags for Hiking and Backpacking in Warm Weather | Extra Portable with Compression Stuff Sack HYBRID SHAPE FOR ADDED ROOM - The NTK Viper Sleeping Bag is built in an exclusive hybrid shape that offers the best of two worlds: The mummy-shaped head area associated to the double-width envelope foot area ensure there's enough wiggle space for your feet while keeping your head and arms comfortably free. SPECIALLY DESIGNED LINING OFFERS A FRESH, SILKY TOUCH - Our differentiated Poly-Cotton fabric consists of 30% cotton, which creates a soft, silky liner surface that is gentle to the skin and extremely breathable, making it perfect for those warm nights, when a fresh feeling sleeping bag is what you most need. MULTI-CHANNEL HOLLOW FIBER FILLING Means your sleeping bag is very fluffy and cozy when in use, but highly compact for storage in the provided Quick-Cord compression stuff sack, which makes its portability and convenience ideal for light-weight backpacking. ROOMY, SAFE, DURABLE AND CONVENIENT - At 6.9ft tall x 2,46ft wide, this is the perfect XL adult sleeping bag. It features a half-way zip down, for easy in and out and that can be kept open in warm weather. The CPAI-84 compliant fire-retardant thermal shield is durable and the sleepingbag can be conveniently machine-washed. LIFETIME WARRANTY AND MONEY BACK GUARANTEE ensure this will be your best, worry-free outdoor gear purchase. Confidently try our sleeping bag on your next trip and, if you don't love it, send it back for a full refund, no questions asked.