Description: Material: This motorcycle helmet bag is made of quality oxford cloth, known for its durability, waterproof and resistance to wear and tear, protects your belongings from dust, water, and scratches, ensuring long-lasting use.Large Capacity: The Motorcycle Helmet Backpack measures 42.7*40*30cm, providing ample space to securely store your helmet and other essentials while on the go.Multifunctional Design: This helmet bag is not just for storage; it also features a USB port and ventilation system that helps eliminate sweat odor from your helmet, keeping it fresh and clean.Portable: With its convenient strap design, this motorcycle helmet bag can be easily carried around during your rides or travels, making it an ideal accessory for every riders.Versatile Design: This multifunctional waterproof backpack ideal for all kinds of outdoor activities, camping, hiking, mountain bike, as well as cabin hand luggage. Also perfectly suitable as a work backpack. Specification: Material: oxford cloth Size Chart: 42.7cmx40cmx30cm/16.81inchx15.75inchx11.81inch Package Includes: 1Motorcycle Riding Backpack Note: Please allow slightly errors due to manual measurement and different monitors.