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 chooseand 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.