Multifunctional use: Suitable for most motorcycles, off-road vehicles, dual sports and endurance races, and can also be used as handbags and shoulder bags for easy movement. It is even suitable as a commuter school for backpacks.Name: Motorcycle bagMaterial: Oxford cloth+EVA+pu non-slip leatherSize: Length: 46cm/18.1inWidth: 27.5cm/10.8inHeight: 20cm/7.9in (extended 11cm/4.3in)Applicable scene: motorcycle tail bag/backpack/handbag/travel bagProduct features: large space capacity, expandable helmet, hard shell design, more convenient to carry, reflective logo, excellent material, fine workmanship, high-end luxury, comfortable and soft, waterproof and wear-resistant.Reminder: The size is manually measured, and there is an error of 1~2cm/0.4~0.8in. The specific size will change due to the volume of the bag that is affected by the items you store. Please refer to the actual product.