The Leather Link features handcrafted Roux Granada leather made in France. The strap elegantly wraps around the wrist and magically attaches with flexible moulded magnets that gently flex to help reduce accidental adjustments throughout the day. 41mm: Strap fits 130–180mm wrists. 45mm: Strap fits 150–200mm wrists. Works with all versions of Apple Watch. Material: Leather