Multipurpose dog basket for bike, buying one is equivalent to getting 4 bags. It also can be used as pet travel carrier, pet carrier backpack, pet bike basket and pet car seat.Measures11.5L*10.5W*14.5H inch. Max capacity is up to 15 lbs..This pet basket for bike is made of durable 900*900D oxford,up to use for long time. And we've upgraded the back of this backpack and added extra soft pads for comfort so that when you use it as a backpack, you don't feel pain in your back..Quick disassemble and easy install in few minutes. DISASSEMBLE: Open side and back velcro pouch, 2 side base insert boards slipped into the left and right pouches, back insert board slipped into the back pouch. The bottom board is already installed befor we packing. INSTALL: It has double straps to better hold the basket, 2 on the head tube(12.2" straps) and 2 on the handle(7.2" straps)..Mesh top and front allows air flow and won’t be hot and humid. A rolled-up window at the front is convenience to your dog sitting in his bag and enjoy the view..An adjustable tether attaches to collar to prevent your dogs to jumping out. Won’t be worry about any hurt when you are riding.