Size Adjustable 38mm/40mm/41mm for 5.6"-7.1" (140-180mm)wrist, 42mm/44mm/45mm/49mm for 6.2"-8.3"(160-210mm) wrist, Please check the backside of your watch to find the right size to make sure the right model wristband you choose. Compatible Models: iWatch SE, Series 6, Series 5, Series 4, Series 3, Series 2, Series 1,and works with all previous versions of Apple Watch. Excellent Quality: Seizehe sport bands are made from higher Performance silicone material, dirt-proof and water resistant, lightweight, flexible, not discolored, soft, breathable and be washed, comfortable to wear and healthy for your skin, bring you a best wearing experience. It's also very easy to dry after sweating or washing. Suit for daily use, working, dinner party, travel, formal, casual occasions. Suitable for occasions: any occasion, sports, leisure, fashion, simple style.