Reinforced side protection. Soft and washable upholstery. Ergonomic shape that allows the use of a helmet. Enhanced security. Additional safety belt to the frame. Child resistant buckle. 3 height options for belt placement. Footrest adjustable in 4 positions. It is supplied fully assembled, no additional assembly actions are required. Ideal solution if you are a regular cyclist and are looking for a quick assembly and disassembly system, without tools. The carrier can also be moved back and forth to fit any bike and child. no tools needed