"SLIPPERY STRAP ISSUE": The strap must inserted through the bottom opening of the buckle & it will not slip. "Slippery" comments because buyer didn"t thread it correctly * External Diameter of the Ring: 9.25 inches; internal Diameter of the Ring: 7 inches * Nylon Webbing Straps (W x L): 0.98 inch X 175 inches * Ring Material: ABS & support up to 200 kgs; shipping weight is aprox. 4 lbs * Includes 2 Gymnastic Rings with 15 foot straps and quick adjusting cam buckles