Set includes the Pro Series exercise ball, and a dual action pump Ball is often used in workouts like yoga and pilates to improve balance and coordination Use as a chair for passive workout that improves posture Ball is easily deflated for transport and storage using the included pump Extra-thick PVC construction is anti-slip Anti-burst construction will slowly and safely deflate if punctured A 75-centimetre diameter makes this ball the perfect size for users 180cm (6 ft.) or taller Safe and sturdy ball has a weight capacity of 453.6kg (1,000 lb.)