The y2k navy blue Aeropostale duffle bag is a medium-sized gym bag made of polyester material. It features a zip closure, adjustable carrying strap, and zip fastener. With four pockets, this unisex adults' bag is perfect for gym & training activities. The nylon handle/strap material ensures durability. The classic Aeropostale brand and blue color make it a stylish and practical choice for fitness enthusiasts.