• Dimensions: 13.78 x 11.61 x 8.66 inches (L x W x H). The height of the first extended level is 9.84 inch. The height of the second extended level is 11.41 inch. This motorcycle helmet tail bag is designed for most motorcycles. It can be used as motorcycle tail bag, motorcycle backpack and handbag.
• 1 main compartment has 20L capacity to store your carry-on items while you're riding, such as your phone, wallet, cable, earphone, power bank, map, drinks, tools or other daily necessities. The maximum capacity after expansion is 28L, which can hold most helmets, such as cross-country helmets, uncovered helmets, full helmets, etc.
• Made of waterproof EVA and polyester material, effectively prevent rain, water, mud, dust from entering this bag quickly. Waterproof rain cover included can fully protect the whole bag from rainwater, keep your belongs not be wet.
• 4 buckle with backseat bag straps is stable enough to hold this bag on the rear of the motorcycle. Anti-slip bottom design to prevent the bag sliding when you're riding on a rugged road.
• With removable, comfortable and breathable mesh double shoulder strap, you can also use this bag as a backpack. A handle design in the top makes it easy to carry this bag around in comfort. You can alter how to carry depending on your needs.