All-in-one home gym equipment for variety of functions: use our exercise balls for a wide array of active exercises such as yoga, Pilates, or CrossFit to tone muscles, increase Cardio endurance, build strength, and control weight. Gym grade exercise ball: Professional quality PVC material, that stretches evenly across the ball surface, maintaining its shape longer and preventing it from rolling away. Includes quick dual action inflation pump ball is delivered deflated and can be pumped up in minutes with minimal effort Non-slip ribbed body stays put with skin contact: the PVC body has a matte surface with horizontal ribs contoured all around it -- making it easy to hold without slipping while tossing, bouncing or squeezing the ball even with profuse sweat. User Tips: store your ball indoors at room temperature. Clean your ball with a soft cloth or sponge and mild soapy water if needed. Keep away from sharp objects.