To use foam with skin or sponge as an outer layer of a ball for sports or leisure.

An outer layer composed of polyurethane or polyurethane- polyurea and comprising a compact skin layer and a layer with a micro porous domain. The total thickness of the outer layer is 1.5-5 mm and that of the compact skin layer is 0.5-2 mm. The outer layer is provided with following properties. Average density: 0.4-0.6 g/cm3, Shore hardness, scale A: 30-65, Longitudinal cut: larger than 5 daN/cm, Transverse cut: larger than 5 daN/cm, DIN friction with 5N load: 150-250 mm3, Static water capture with free slice: 2-20%.