3/8 " wide - COPPER/24K/ GOLD: Copper Sports Band plated with 24K Gold for a jewelry look! Many active people wear copper wrist bands. Looking for that extra edge in your game? Try the pro's secret! Order your Ace Copper Wristband today! 99% pure copper,no lead, non-binding,non restrictive. Molds to any wrist shape. Clear coated to maintain shine. Polish inside every 3 months with cleaner. Used by top athletes worldwide. SIZING INSTRUCTIONS: Measure wrist around and choose 1/2 inch smaller size. i.e. 7" wrist = 6 1/2" wristband because of 1/2" space between wristband ends of bracelet.