The Apple Watch Strap (CS Series) in Black is designed to fit 42mm, 44mm, 45mm, 46mm, and 49mm models. Crafted for durability and comfort, this strap provides a secure, adjustable fit for all-day wear. Its sleek black color offers a timeless, versatile look that complements any style, making it an ideal choice for both casual and formal occasions. The strap ensures a snug, reliable fit, enhancing the overall experience of wearing your Apple Watch.