ZM composite PU Exceptional feel, control and bounce Performance of a top indoor ball with the durability of an outdoor ball Game ball rated 2 yr Guarantee Available in size 7 or size 6 (28.5) Our best game ball for basketball made from ZM composite polyurethane synthetic leather. Exceptional grip and performance with a 2 year guarantee under normal game and practice conditions. Available in two sizes mens size 7 and womens/ youth 28.5 size 6.