Hamax supply a 39standard39 bar with their kiss sleep and smiley child seats clamped to the seat tube of the notional 39average bike39 this bar supports the hamax child seat and and also delivers an element of shock absorption sadly but understandably given the many shapes and sizes of bicycle in the world the hamax standard bar is not a universal fit hamax therefore produce a range of alternative support bars to maximise the possibility of you being able to fit one of their c