Features: Silicone material, comfortable and lightweight, making your life easier. With porous designed, one size fits most people, you can adjust it to meet different requires. Waterproof and sweatproof, moderately soft and comfortable to wear. Two-color bite, compression molding, sturdy and durable. Fashionable and elegant appearance, showing your personality. Specifications: Material: Silicone Width: 20mm/22mm(optional) Length: Approx. 125+103mm/4.92+4.05inch Color: Black White, Black Gray, Black Light Green, Black Red, Yellow Black, Orange Black, Olive-green Black, Army-green Red, Mid-night Blue White, Red Black(optional) 20mm for Following Models: For watch5/5 pro/watch4 40mm 44mm/watch4 classic 42mm 46mm/watch3 41mm/watch Active 2 40mm/44mm/watch Active 40mm/watch 42mm/Gear-sport/GearS2 classic For watch GT3 42mm/GT2 42mm/watch 2/watchSE/MagicWatch 2 42mm For GTS/GTS 3/GTS 2e/GTS 2mini/GTS 2/pop pro/pop/BIP/BIP U/BIP lite/bip 1S/GTR 42MM/Zepp E For Ignite/Ignite 2/Unite/pacer/pacer pro For Venu 2 PLUS/vivomove sport/vivoactive3/3music For Forerunner158/55/245/245music/645/645music For venu/venu Sq/vivomove/Luxe/style/HR/vivomove3 22mm for Following Models: For forerunner255/Venu 2/vivactive4/Active For VantageM/M2/Grit X/Grit X Pro For GXY watch/watch 3/Gear S3 Classic/S3Frontier For watch3/3 pro/GT2 pro/GT 2e/GT (42mm, 46mm)/GT2 46MM/GT3/GT Runner For watch GS PRO/MagicWatch 2 46mm/Generation 1/watch Dream For GTR3/GTR3 Pro/GTR 2e/GTR 2/3 stratos/GTR 47mm/space/stratos/2 stratos For S1 Pro/watch color2/watch sport/watch color/Hayou RT LS05S For YAMAY SW022/Imilab kw66 Note: Watch strap only, smartwatch not included. Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution. Package includes: 1x Watch Strap