GlowFit 2000lb Anti Burst Strength & Stability Exercise Ball with Pump Anti Burst Exercise yoga ball Improves core strength, flexibility, posture The Fitness Ball is made of exceptionally durable PVC material (latex free) that prevents bursting. Pump is a foot pump. Size options: 55 cm, 65 cm, 75 cm The burst resistant feature ensures safety and performance, as the ball will deflate slowly even if punctured Support 2000 lbs. of static weight