Pu Contractubex Faux Boxing Speed Ball Black #2044 24000538 Material : PU and Latex Liner ,Diameter : 8.66" / 22cm Weight : 12.31oz / 349g Package Includes 1 x PU Contractubex Faux Boxing Speed Ball Black #2044 The inflatable boxing speed ball is very flexible The ball will enhance your endurance, speed and accuracy