nylon Imported USED FOR 3 SEASONS:Our Sleeping Bags can be used for 3 seasons.They are designed for 10~20 Degrees Celsius. Moreover, these bags also have a weather-resistant design to keep you warm even in extreme conditions and prevent you from any dampness - this is achieved through double-filled technology.our sleeping bags are designed to ensure that after a tiring day of trekking, hiking, travel or any other exploration you can get a good and relaxing night’s sleep. DESIGN: Separated zipper at the bottom can also make your feet often come out through the wind. Half-circle hood with adjustable drawstring keeps your head warmer even in extreme conditions.Our sleeping bags are designed to provide much needed rest after a full day of outdoor activities. MATERIAL:Outer Cover Material-premium 210T Anti-tearing Polyester Fabric which is waterproof and Breathable; Lining Material:190T polyester pongee SIZE&EASY TO CARRY:(190 + 30)cm x 75 cm.Can be wiped clean making it versatile and convenient. Each sleeping bag comes with a compression sack with straps, allowing for super convenient storage and easy carry maneuverability 100% SATISFACTION :100% NO QUESTIONS ASKED, no hassle money back or replacement .We try over very best to make sure every customer is completely satisfied. If there's a problem, message us! Order now!At your service,dear.Anyway,thanks for your coming