Crown Sporting Goods Yoga Ball and Core Stability Balance Trainer with Foot Pump High-density, anti-burst exercise balls rated up to 2,000lbs and 500lbs of static weight Made from slip-resistant rubber with gentle ridges for excellent grip and stability Great for home gyms, yoga and Pilates studios, rehab facilities, and even the office Arrives deflated and includes free foot pump for quick and easy inflation Choose the perfect size for you: Pink 55cm, Blue 65cm, and Purple 75cm