PROFFESIONAL GRADE The balance trainer is crafted from high quality materials, and is built to withstand 600 Lbs of weight.USER SAFETY The textured matte design is not only attractive, it makes the ball much easier to grip when performing exercises. Non slip rubber feet ensure that the trainer won't shift during use.IDEAL DESIGN The diameter of the trainer is 24.4" and it weighs less than 12 Lbs.VERSATILE The half ball trainer can be used for stability training, core strengthening, rehabilitation, and muscle stretching.The Balance trainer includes a set of resistance bands, and a convenient foot pump.