Description:Premium Silicone that's built to stand up to your Active Lifestyle, unlike your formal wedding ring, silicone rings make it easy to show your commitment.FDA approved, keeps your finger safe at work - Hypoallergenic, chemically inert, and electrically non-conductive.Cool, Dry, and Breathable.Comfort all day in a lightweight silicone construction.US size 8/9/10/11/12/13, for you pick.Specification:Wide 8.7mm, thickness 2.5mmSize Chart:US size 8; CA size 8; UK size P 1/2US size 9; CA size 9; UK size R 1/2US size 10; CA size 10; UK size T 1/2US size 11; CA size 11; UK size V 1/2US size 12; CA size 12; UK size XUS size 13; CA size 13Package Includes:10 Pieces Silicone Ring(5 Pack)Note:Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.