Product DescriptionThis is an full-body exercise, which needs particularly the coordination of body's each part. With the adjustable height, our vertical pugilism ball is suitable for children and also teenagers to build up both physical strength and willpower. Can improve their health and make their physical fitness develop at different levels. And can also make them be determined and have a positive effect on kids' willpower. So, what are you waiting for? This is absolutely a perfect gift for your kids. Don't miss it.Features:High tension springPlastic base can be filled with sand or waterComes flat packedCompletely free standing and requires no ceiling mountingGreat to improve your fitness, practise your boxing skills or just to relieve stress1. Lose weight, regular exercise can burn calories for weight control2. Body shaping, you can drive the muscles, tight muscles, modified muscles, strengthen bones3. Relieve pressure of work and life√ Product specifications:Material: PU + MetalAdjustable Height: 90-120cm(35.43in-47.27in)√ TipOur products are designed to provide you with a higher standard of living. If you are not satisfied with the purchase for any reason, please contact us because our main goal is customer satisfaction, so we will serve you wholeheartedly.Due to the difference between the display light and the shooting light, there may be a color difference between the picture and the actual object.Due to different manual measurement methods, the error of 1-3 cm is a reasonable range.