Material: PVC Size: 90CM x 45CM Load-bearing: about 200 kg (max.) Package Contents: 1 x Yoga ball Featured: Suitable for sisters with fat bellies, thick arms, and legs! Promote blood circulation, and tone heart and lung!. Keep your spine straight so as to ameliorate your hump-back problem! It's safe and convenient to use in leisure, exercise, weight loss and self-cultivation.