The leather bracelet with end piece is made from handcrafted Roux Granada leather from France. The bracelet elegantly wraps around your wrist and closes with flexible, shaped magnets that have a bit of give, ensuring it sits comfortably and securely throughout the day. You can pair most bracelets with any Apple Watch Series 3 case or newer cases of the same size. 41 mm bracelets fit 38 mm and 40 mm cases. 45 mm bracelets fit 42 mm, 44 mm, and 49 mm cases.