- The backpack is made of high-quality materials, and the backpack is reinforced and double-stitched at all stress points. Sturdy and durable, our special coating makes our training backpacks both waterproof and scratch-resistant. - This backpack holds all your essential gear. The multi-layered interior storage compartment can accommodate a large amount of outdoor gear and meet your daily travel needs. Suitable for outdoor activities such as fitness, outdoor travel, hiking, camping, military, Army, running, Biking. - The front of the backpack is designed with a helmet position, which is convenient for the placement of the helmet when riding. The strong elastic rope perfectly protects your helmet safety - Material: 600D Oxford Polyester - Size: 16 x 8 x 5.5 Inches