Weighted Infinity Hula Hoop designed for full-body workout with added comfort and relaxation with its unique shock-absorbing technology, minimizing impact on your joints. With the focus on premium quality and safety, our Infinity Weighted Hoop have been finished to the highest standard and smoothness and is made of hard ABS plastic and soft silicone ball fully enclosed with iron sand materials to avoid leaking Material Plastic Silicone Brand FIT ON FORM Age Range (Description) Adult Color Blue-24 Knots Product Dimensions 47"L x 47"W Used twice- it was not for me!!