... inner layers,2inner layers,3inner layers 1.6MM,1.8MM,2.0MM thickness Machine stitched volley ballBrand name :GALA or OEMMaterial ... ,Offical size and weight available in all sizes from 5,4,3,2,1,and Miniature,too2,Available in various of printings ... ,TPU,PU is available,fitted with butyl/rubber bladder.4,Available in packing :Poly bag,net bag,color box and as customer ...