... hardness 3) with strong tear strength and anti-slipper seat cushion it is anti-impact, light weighted, variable hardnessand ... with strong tear strength and anti-slippery.Polyurethane soft self-sintered skin ( ISF ) series, This is a ... mat of gymnastic appliance, backrest, kneeling pad, handle, footboard, bike saddle, sport protective rings. It is also extensively used medical ...