Features：Can be inflated to 8” or deflated to suit2 Self inflators providedEasy cleaning surfaceLightweightHighly DurableWeight：430gPackage include：1 x Yoga fitness ballWhat is Bender Ball? The Bender Ball™ was created by Master Fitness Trainer Leslee Bender， founder of “The Pilates ” and a fitness education expert education expert with more than 25 years in the business. The Bender Ball is a pliable “mini stability ball” that allows the exerciser to work their core in ways that cannot be accomplished with standard crunches or large exercise balls. Bender’s unique workout – The Bender Method of Core Training™ - incorporates her exclusive Selective Stabilisation method to bring about the best possible results. How does it work?The Bender method pinpoints specific muscle group in the abdomen so that it heightens the intensity of the workout and allowing all areas of the abdomen to be in perfect position for results. Leslee Bender’s proprietary method of Selective Stabilisation™ recruits the “stability muscles” so that each workout is more effective than traditional crunches done on the floor. The Bender Method is available to those who want a personalised workout at home or on-the-go. Bender Ball Vs Traditional Crunches There are limits to how much range of motion the exerciser can accomplish with a regular floor crunch. The exerciser can only go forward， not back. The Bender Ball enables extension back and flexion forward， which works the muscles more effectively. In an independent study conducted jointly at two US universities， the Bender ball provided a workout that’s up to 408% more effective than ordinary crunches and 2 times better than a large Swiss Stability Ball.Pls kindly search CJUN in wish， You can find More Great products。The more you buy， the more concessions.Best choice for you!!!We guarantee the lowest price and highest quality for all of our products! If you find a cheaper price than ours， we'll lower the price right away. If you find that the quality of our product is poor， we'll give you an unconditional refund!