describe Features: Available in 4 different sizes 18mm, 20mm, 22mm and 26mm. Please confirm the width of the strap first to choose the appropriate size. Anti-slip design adopts anti-slip strip design, which can be inserted into the hole of the watch strap well and not easy to fall off. The skin-friendly material is made of high-quality silicone, which is soft and durable, providing a comfortable wearing experience. Classic black and white with 10 buckles in black or white. One turn secures your watch strap. Waterproof, waterproof and sweatproof. compatibility 18mm strap buckle: compatible with GARMIN Venu 2S, vivomove 3s, Garminmove3S, vivoactive 4s, GarminActive S; 20mm strap buckle: compatible with GARMIN Venu Sq, venu, vivomove3, Garminmove3, vivoMove Luxe, GarminmoveLuxe, vivoMove style, Garminmove style, vivomove (HR sports version), vivoactive3 (music), Forerunner 245 (music), Forerunner645 (music) ; 22mm buckle: compatible with GARMIN Venu 2, vivoactive4, GarminActive; 26mm Strap Fastener: Compatible with GARMIN Fenix 5X/5X Plus/3/3HR. Specification: Material: silicone Sizes: 18mm, 20mm, 22mm, 26mm (optional) Colour: Black Packing list: 10* watch strap fasteners