Discover the ultimate IRONJIAS waterproof motorcycle backpack made from durable PVC material, designed to keep your belongings safe and dry on the road. With a large capacity and stylish design, this backpack is perfect for riders who demand both function and style

【Large Capacity】35L waterproof motorcycle sissy bar bag has enough room to hold everything you want to take away, maximum capacity up to 40 liters making your trip full of security.

【Easy to strap to sissybar】Removable shoulder straps with chest whistle buckle which helps you lock your backpack in back securely and comfortably. Sponge filled shoulder straps greatly improve the comfort. You can also easily to attach the backpack to motorcycle.

【Waterproof & Durable dry bag】500D PVC, with seamless material with high water repellency construction. There is no need to worry about items in the backpack getting wet. And it is resistant to corrosion and abrasion. It can be travel bag, tail bag for motorcycle touring, and general purpose adventure bag. You can bring it into various harsh outdoor environments.

【Reflective strip & Vent system】We set reflective trim at motorcycle backpack to increase night safety. Rotate the air valve on the right side of the bag to eliminate excess air and make the contents of the bag morecompact.