Thank you for viewing. This is a simple leather mantel bracelet. The metal parts are surgical stainless steel (304). 316L, 304, and 202, known as surgical stainless steel, are low-allergen materials also used in medical tools such as scalpels and scissors, as well as luxury watches. It is a special stainless steel that is resistant to rust, corrosion, oxidation, and heat. Unisex (for both men and women) Sizes: Wrist circumference S size: 15cm M size: 17cm L size: 19cm LL size: 21cm (Example: If your wrist circumference is between 16.5cm and 17.5cm, 17cm would be the appropriate size.) Please specify your size after purchase. (If no size is specified, we will send you a size M. Please understand.) Leather width: 5mm Materials: Leather: Genuine leather (cowhide) Mantel and other metal fittings: Surgical stainless steel, gold coating Colors: Leather: Natural Metal fittings: Gold If you would like a size other than those listed above, please contact us. Please feel free to ask any questions.