PREMIUM MATERIAL - motorycle rear seat bag is made of premium quality faux Leather, combined with PU composite material to make the bag has tear resistance and wear resistance. And it with a waterproof bag, you can use it in rainy days (Not suitable heavy rain)DUAL USE BAG - It is usually used as a motorcycle tail bag while driving, but when install a strap to change one shoulder in seconds, double shoulder backpack, handbag, can carry different kinds of capacity for various purposesLARGE CAPACITY STORAGE - This motorcycle helmet bag is simple appearance, large storage capacity, with expandable bottom to expand storage space, can store your helmet, wallet, mobile phone, camera, energy drink, cigarettes and other itemsHUMANITY DESIGN - This motorcycle bag has two-way zipper design, easy to take items from angles. The breathable backpack pad and mesh hollow straps keep you from getting stuffy while carrying. And the highlight reflective strips on both sides to improve night and smog travel safetyEASY TO INSTALL - Simply open the seat, use 2 straps to tie the rear seat bag to the saddle of the bike and fasten it with 4 buckles, it suitable for most motorcycle, such as street, cruiser, touring, adventure and sport bike. We provides technical support, if you install have any problem please let us know, we will help you