Ezek stuff sacks boxes are made of Lightweight durable 210D polyester 0xford,water-resistant materials. Mutilple size are availabe; These stuff sacks are perfect for sleeping bag, clothes, blanket, coat ,pillow and other items for hiking, camping, trekking, backpacking, hunting, fishing, and all outdoor activities. The bottom handle strap of sacks makes carrying or moving is easy. Dust flap in the sacks can keep your items clean.