These leather bracelet cuffs are available in a variety of sizes, and colors. The leather cuffs are with 2 snaps, so you can adjust the size of the bracelet. Because of this, bracelets are comfortable to wear. They are flexible. That's why to sew-on crystals on them won't be a problem. Also, bracelet cuffs have a flat surface, so it's a perfect choice to apply Flat Back crystals on them.