Sleeping Bag 3 Seasons (Summer, Spring, Fall) Warm And Cool, Waterproof Indoor. Nylon ?? DESIGNED FOR COOL AND COLD WEATHER - Our sleeping bags have a waterproof, weather-resistant design to keep you warm even in extreme conditions - this is achieved through double-filled technology. USED FOR 3 SEASONS - Rated temperature 41-77?(5-25?). Comfort temperature is 50-68?(10-20?).Portable,lightweight compact design which is convenient to carry along for emergency, and its ability to withstand extreme weather conditions ? certainly the best sleeping bag for backpacks and adventures. EASY TO CARRY AND CLEAN ? The sleeping bags are also extremely easy to clean as they are safer for machine wash. Each sleeping bag comes with a travel-friendly carry bag, a compression sack with straps, which makes it quite convenient to store and carry the plush sleeping bag along. BOTTOM ZIPPER DESIGN - Separated zipper at the bottom can also make your feet often come out through the wind , you can sleep well. Sleeping bags are available in a variety of colors, personalized for the whole family to choose?and it is the best gift for boys and girls. MATERIAL - Outer Cover Material:210T Nylon, Cozy, Waterproof and Breathable Fabrics;Lining Material: 190T Polyester Pongee; Fill-Material: 100% hollow fiber.The sleeping bag is a good gear for traveling and walking.