The New Adidas Alliance II Sackpack in White & Black features a zipper pocket and drawstring closure for added security. Made from a combination of polyester, nylon, and cotton materials, this medium-sized bag has a 15L capacity and two pockets for organization. Designed for gym and training activities, this Adidas sackpack is perfect for men looking for a stylish and durable backpack to carry their essentials. The black and white color scheme adds a sleek and modern touch to this versatile piece of sporting goods.