Nylon Woven Loop Sport Strap Band for Apple Watch Series Ultra 10-1 38mm-49mm
42/44/45 MM size band is compatible for 49MM Apple Watch;. For series 10; 38/40/41 mm size band is comatible for series 10 42mm watch; and 42/44/45/49mm size band is comatible for serie 10 46mm wathc.