This is top most technology ball . the upper surface of this ball has been calculated with world exclusive NEOTECH AND AEROSENDA technology. NEOTECH is changing the molecular chain structure of rubber so it is consistent for many matches. AEROSENSA senses Air-for maximum lift and drag in air , accurate flights . Upper surface rubber is made with blend of finest garde of natural and synthetic rubber. Weight 450 + -10 gms. 100% Skill hand stitched Hi Tech INSEAM Latex Bladder.