1Wide Application: The motorcycle saddle bag can be used on most motorcycle, dirt bike, dual sport motorcycle and enduro, it can also be used as handbag for easy movement. 2Expandable: Features a expandable bottom section to enlarge storage space, the motorcycle tail bag can be expandable from 14.5?18.5L capacity. 3Durable Material: Made of waterproof material and oxford cloth to protect your belongings in the rain. The thick fabric is durable, wear resistant and has a long service life. 4Practical: Can be used to store your wallet, phone, camera, energy drinks, cigarette, etc, make motorcycle travel more convenient, rainproof fabrics effectively protect your belongings. 5Stylish Bag: Easy to install the motorcycle seat bag on your motorbike with straps. The backpack is universality and stylish design with helmet shaped.