100% 316L Stainless Steel & Completely Shiny Made from hypo-allergenic surgical grade 316L stainless steel for long life. It is durable and strong but also LIGHTWEIGH. It will never fade, rust, tarnish, corrode, stain, and never turn skin green. Shiny Surface & Smooth Edges Bright and shiny with smooth edges all around by 360-degree polished many times. It\'s comfortable and safe for you to wear. Adjustable to Fit Most Wrist Sizes Flexible enough with a gentle squeeze or slight spreading to adjust, it fits most wrist sizes.