The unique nature of the rings gives all of the exercises a fun, athletic feel. Nearly every exercise is more challenging when done on the rings. Accessible for beginners, with gentle progressions towards harder skills. Because ring training activates so many muscles in such a coordinated way, it"s also an effective adjunct to some forms of physical therapy. Specifications Nylon Webbing Straps (W x L): 2.5cm(0.98in) X 450cm(17FT) Anti-skidding design Pipe Diameter of the Ring: 3cm(1.18in) External Diameter of the Ring: 23cm(9.06in) Maximum Load: 200kg Colour: Black Ring Material: ABS Package Includes 2 x gymnastic rings 2 x high-strength nylon webbing straps with quick-lock buckles