One size fits all. Product fits almost everyone upon arrival. It can be easily bent by hand to adjust to fit even the largest wrist. Every piece is handmade resulting in every piece being 100% unique. There will be slight variations in alignment, font, and deepness of stamp from the mockup on this page and the finished product you receive. Made from 100% hand polished 1100 Pure Aluminum. It will never fade, tarnish or rust. It does not leave green marks on your skin like other metals.Easy to maintain. It can be hand polished to brand new with a normal cloth.