ATUP Sport Bands Are Compatible for Apple Watch SE, Series 7, Series 6, Series 5, Series 4, Apple Watch Series 3, Apple Watch Series 2, Apple Watch Series 1. Band Description: 38mm/40mm-S/M, 38mm/40mm-M/L sizes are made for 38mm apple watch and 40mm apple watch, 38mm/40mm-S/M means size Small: Suitable for 5.1"-7.1" (130mm-180mm) wrist; 38mm/40mm-M/L means size Large: Suitable for 5.9"-7.9" (150mm-200mm) wrist; 42mm/44mm-S/M, 42mm/44mm-M/L sizes are made for 42mm apple watch and 44mm apple watch. 42mm/44mm-S/M means size Small: Suitable for 5.5"-7.5" (140mm-190mm) wrist; 42mm/44mm-M/L means size Large: Suitable for 6.3"-8.3" (160mm-210mm) wrist. Please choose the correct watch model and size for yourself. Premium Material: High quality soft silicone with smooth finish for a sporty look, comfortable and durable, which won't get dirty easily and easy to clean. Color Options: Black, Orange Red, Pink, Navy Blue, Teal, Royal Blue, White, Gray, Wine Red, Light Blue. Colors could be mixed to wear for unique styles! Simple Installation: Two watch lugs on both ends, which locks onto Apple Watch interface precisely and securely. Easy to take on/off. Kindly Notice: Please wait a few seconds after you slip it into your iwatch, make sure the band won't up and down when it sits in place completely. Package Included: 1 x Sport Band for Apple Watch (Apple Watch is Not Included) Warranty: One-year warranty. Hassle Free Replacement or Money Back during the warranty. If you have any problem with our products, please contact us Via Email. We will give you a reply as quickly as we can.