Thank you for viewing! This is a MIX toggle bracelet featuring pearl (shell pearl) and a stainless steel chain. The chain and toggle are made of surgical stainless steel. Surgical stainless steel, such as 316L, 304, and 202, is a low-allergen material also used in medical tools like scalpels and scissors, as well as in high-end watches. It is a special type of stainless steel with excellent properties, including rust resistance and strong resistance to corrosion, oxidation, and heat. Shell pearl is a type of artificial pearl made from shells, replicating the unique luster of genuine pearls. Its main advantage is its ease of use. Compared to real pearls, it is more resistant to sweat and dirt, and it won't easily deteriorate from sweat or moisture. It is durable, and like real pearls, it feels cool to the touch and has a natural appearance due to its moderate weight, making it a popular material for everyday wear. Its quality and cost performance are comparable to real pearls. Sizes (Inner Circumference of Wrist) S Size: 15cm M Size: 17cm L Size: 19cm LL Size: 21cm (Example: If your wrist circumference is between 16.5cm and 17.5cm, the M size (17cm) would be the appropriate size.) Please specify your size after purchase. (If no size is specified, the M size will be sent. Please be aware of this.) The above sizes do not refer to the total length. Chain Width: 7.5mm x 17mm Pearl: 8mm Materials: All Stainless Steel, Gold Coating Chain & Toggle: Surgical Stainless Steel (304) Shell Pearl Colors: Chain: Gold Pearl: White Please feel free to contact us with any other questions.