Buckle Closure Fit All Models: The apple watch sport bands are tailored for Apple Watch 38mm 40mm 41mm 42mm 44mm 45mm 49mm for Series SE 8 7 6 5 4 3 2 1 Ultra. 2 size options - 38mm/40mm/41mm fits 6.3”-7.9” wrists; 42mm/44mm/45mm/49mm suits 6.7”-8.3” wrists. Water-Ready Comfortable Wear: Soft, smooth silicone apple watch sport band gives a silky comfy touch that refreshes your wrist on the go. Water-resistant and sweat-wicking, the rubber apple watch strap is ready for any water-packed activities, workouts, exercises and all your daily routines. Customizable Fit: Classic tang buckle makes the iwatch straps easy to resize for a secure, snug fit. Also a snap to slide in and out of your apple watch to change out the look for your day-to-day outfits, from sport wear, business attire to casual look. Color-Matched Clasp: We match specific buckle color with the band’s shade or your apple watch finish, creating a harmonious tone-on-tone look to blend in seamlessly. Hassle-Free Service: Need help with your apple watch wristbands? Our customer support team is always ready to help 24/7, dedicated to turn any oops to wow. Safe and Classic Design -- Security buckle, easy to put on and firm -- Waterproof and durable silicone, comfortable and flexible -- Multiple color, match your clothes and outfit, change you mood everyday -- Adjustable size, adjust the size according to the circumstance of your wrists