Designed by professional trainers for elite athletes, the TRAINERball for Sport Performance details 16 exercises so you can maximize your strength and regeneration routine. These 16 exercises like the dynamic plank, glute bridge, and knee tuck, focus on core stabilizers, flexibility and efficient muscle regeneration. Anti-burst construction - 500+ lb. rating Pthalate-free material Hand pump included Illustrated with 16 exercises in 2 categories: strength and regeneration Portable and convenient for training anywhere 60cm size SKLZ Sport Performance 60cm Trainer Ball MS1241285 MS1241285 831345005098