Compatible with Your Watch 2018 Series 4, Series 3, Series 2, Series 1, All Models Version with this refined replacement wrist band.Made of custom high-performance Soft Silicone , the Sport Band is durable and strong, yet surprisingly soft. The smooth, dense material drapes elegantly across your wrist a,improves airflow and comfort, bring you a comfortable wearing experience. | NOTICE: 38MM/40MM S/M and 38MM/40MM M/L sizes are made for 38MM/40MM watch. 42MM/44MM S/M and 42MM/44MM M/L sizes are made for 42MM/44MM watch. S/M means size Small, M/L means size Large! Please choose the correct watch model and size for yourself. | An innove pin-and-tuck closure ensures a clean fit. Metal parts made with nickel free stainless steel. Soft silicone with smooth finish for a sporty look. Comfortable and durable. | Band comes with Watch Lugs on both ends, which locks onto Watch Band Interface precisely. Easy and direct installation and one button removal. | ONE YEAR PROMISE: We promise 100% satisfaction customer service & free replacement or refund. If your watch bands have any quality issue in a year.Please contact us we unconditionally send you a new replacement one.