... quality 3.certificate:SGS,EN71 colored sport ball specification RUBBER FOAM BALLMaterialnatural rubberSize28MM,40MM,47MM,57MM,63MM,72MM,90MMStyle massage ... buyer’s requstPayment TermsT/T.PAYPAL,Western union Technical: Foam rubber bouning ball, is a ball of solid foaming ball. ... s surface is smooth spheres in grinding,and materials is foam rubber, inside like filled with sponge materials , but not ...