Compatible Models: Compatible with Apple Watch Series 9 Band 41mm/45mm(2023 Newest) Compatible with Apple Watch Ultra 2 49mm(2023 Newest) Compatible with Apple Watch Ultra 49mm Compatible with Apple Watch SE 44mm/40mm Compatible with Apple Watch Series 8 41mm/45mm Compatible with Apple Watch Series 7 41mm/45mm Compatible with Apple Watch Series 6 5 4 44mm/40mm Compatible with Apple Watch Series 3 2 1 38mm/42mm Please check the backside of your watch to find the right size to make sure the right wristband you choose. The stretchy nylon materials make the strap easy to put on and off, Stretch and elasticity,so the length can be adjusted to fit your wrist perfectly without shrinking The smartwatch bands are made of durable nylon material.Soft,skin-friendly,Soft and breathable,offering a comfortable wearing experience to you. Stainless steel buckle is easy to adjust the length of band and keep your watch securely in place and you don't need to worry about losing your smartwatch FeatureSoft and Stretchy Material: Made of premium Nylon materials，soft and breathable, lightweight and comfortable to wear. Also the elastic gives a nice snug fit on your wrist. The adjustable stretchy nylon solo loop band with super stretchy. Secure & Elastic: Stretched band for Apple Watch strap with stainless steel slider buckle allows you to adjust extremely easily the size of the loop as you wish. Fits your wrist comfortably without constriction.With the super stretchy elastic, easy to put it on or take it off Size Choose: 38mm/40mm/41mm suits for apple watch 40mm 4.5 inch -9.5 inch wrists, also works for 41mm/38mm.42mm/44mm/45mm/49mm suits for apple watch 44mm 4.5 inch-9.5 inch wrists