Set contains - 2 x arm hoops; diameter: 28.5 cm; material: metal and foam. Arm hoops embody very light and handy fitness equipment, with which you can achieve sustainable figure and weight effects in regular training. Especially the arm muscles are strengthened, as well as the shoulder parts are stronger. Training equipment: By turning the bangle into different positions, you can train various parts of the upper body, the arms, back muscles, biceps, triceps, and chest muscles to achieve the desired effect. Multiple use: an effective way to burn calories that improve posture, reduce weight, increase body size and have fun Hula hoops for adults and children for weight loss and massage, for variety is caused by a variety of fitness exercises All Products From Us Have Undergone Strict Quality Checks. If There Is Any Quality Problem Or You Are Not Satisfied With The Product Contact Us. We Will Give You The Best Solution.