Magnetic Copper Bracelets are made of Pure copper, not brass, not alloy, not stainless steel. ?Copper is a red metal, also a green metal. After a long time in the humid air, the copper surface will form a layer of patina slowly, this is oxidation. So if your bracelet turns green, it's normal and proves that the bracelet is made of pure copper. Suggest you take it off when you are swimming, taking a shower, or sweating for a long time, avoid the bracelet becoming green due to prolonged exposure to seawater, sweat, or salt water. If it turns green, please don't worry. ?Tips: Our Copper Bracelets were coated. The best way to check if a copper bracelet is made of pure copper is to cut the bracelet and check inside is copper color. Warning! ! Do not use this product if you have a pacemaker, defibrillator, insulin pump, or any other implantable electronic medical device, or if you are pregnant.

[Jewelry Gift for Men]-The elegant copper bracelet comes in a pretty box, making it an ideal gift for dad, friends, and yourself on Christmas, Birthdays,Father's day. [Ear of Wheat Design]-The ear of wheat design represents hope and wealth, and the edges and inside of the bracelet are smooth that won't hurt the skin. They can be worn comfortably during sports or sleep. [Adjustable Bracelet Fits Most]-Copper bracelet width 13mm, length 21.5cm, Offer Free size adjusting tool and instruction video, allows you adjust size easy at home. If you have any questions, please feel free to contact us!. [Pure Copper bracelet]-Well crafted magnetic bracelet for men, made with premium soild copper, 100% hypoallergenic, lead & nickel free, long lasting lacquer coating to avoid oxidation, scratches resistant. [Magnetic Bracelet for Men]-16pcs 3500gauss rare earth magnets. Each Neodymium Magnet has a strength of 3500 Gauss! for maximum results.