Warm Weather Sleeping Bag Click HERE for more information! Ultra Comfort & Durable. Outer material: Nylon (Waterproof and Durable), Lining:100% Polyester (Breathable and skin-friendly), Premium Polyester keeps the temperature from 55 to 60? and provides a ultra-comfort sleep environment to people. Professional Design. The sleeping bag is waterproof and weatherproof. And the smooth zip closure makes it more convenient. Our sleeping bag measures 83"L x 30"W, the size fits for most people. It can accommodate an adult or two children