Puma Phase Backpack Black 91164 35. A versatile backpack perfect for school or travel. Two compartments, two of which have two-way zippers. Zippered front pocket. Webbing grab handle. Padded shoulder straps. Padded back panel. Two side pockets made of mesh material. Padded laptop compartment inside the main compartment. Reflective details. Specifications: Main material: 100% polyester. Dimensions: 47.5x18x20 cm. Capacity: 28 liters. Made from at least 50% recycled materials.