TMS Silver 30" Yoga Ball 75 cm Exercise Ball W/Air Pump Fitness Yoga Pilates Balance Color : SilverMaterial : PVC (environmental friendly).This yoga ball is a perfect addition to your work out.and it is also an amazing exercise for improving your core muscles and increasing your flexibility. Used by countless physical therapists and personal trainers. The exercise is relatively safe, not easy to damage. Washable and easy to carry. Stable on the ground for easy use. Great for your spine and back health. Strengthen and tone muscles and bones of the hips, back, legs, hands, waist,arms and shoulders and burn fat. Will gradually increase your flexibility, balance and cardiopulmonary function. Comes with a foot inflatable pump. Light weight,Designed to easily inflate/deflate. Specifications : Diameter : 75cm /30''. Thickness: 0.08-0.1mm. Package includes : 1 x silver yoga ball 1 x air pump