The traditional rubber cover delivers exceptional durability and has been designed for recreational outdoor use. This performance ball represents excellent value for those playing on outside courts.It could be practising your free-throws, playing one-on-one or getting a little tournament going. Either way, you need a ball designed specifically for the harsher outdoor courts.Due to its outdoor design, this ball has unrivalled durability. Wilson are aware this could well be pounded up and down on concrete for a long time yet, so have ensured that it continues to offer fantastic performance game after game.Official Basketball sizing Chart:Size 7 " male aged 14+Size 6 " female aged 14+Size 6 " male & female aged 11-14Size 5 " key stage two age 7-11Size 3 " key stage one age 5-7