Exercise Ball for Workouts, Anti-Burst and Slip Resistant, Swiss Yoga Ball for Pregnancy, Stability, Fitness and Physical Therapy, 4 Sizes, with Pump

RANGE OF SIZES FOR A PERFECT WORKOUT: Core Balance Gym Balls come in a choice of sizes to suit your height and workout in comfort. Check out our size guide (image 5) to determine whether you need a 55cm, 65cm, 75cm, or 85cm ball. As an added bonus, each gym ball includes a pump and tape measure to easily inflate to the correct capacity.
DEVELOP YOUR CORE STRENGTH & BALANCE: By creating instability when you sit, lie, or lean on it, a gym ball forces you to engage your core muscles in order to maintain your stability. As well as strengthening your core and improving your balance, a gym ball workout is a winning way to tone your muscles, develop your posture, and improve your flexibility.
NO DANGER OF BURSTING OR SLIPPING: Because Core Balance Gym Balls are made from durable anti-burst PVC, there’s no danger of them bursting if they get punctured. Instead, they’ll slowly deflate to ensure your safety. In addition, the gym balls are covered in anti-slip lines to provide optimum grip on smooth flooring and prevent them sliding around.