Features 1、1. Compatibility: 20mm strap is compatible for Samsung Galaxy Watch 4 40mm/44mm and for Galaxy Watch 4 classic 42mm/46mm, compatible for amazfit, for Garmin, for ticwatch. Silicone dual color strap. 2、2. High Quality: Made of eco-friendly silicone material, no odor and harmless, soft but durable, the silicone strap can withstand cold or high temperature, whether you are swimming or hiking, it is an ideal choice for you or your best friend. 3、3. Suitable wrist circumference: Suitable for 5.5-8.7 inches (139mm-221mm) wrists, the size can be adjusted according to wrist. 4、4. Various colors are available: Easy to wear, flexible and light. Colors are changeable, changing different colors to represent your different moods every day. Specification 20mm is compatible for: Compatible for Samsung Galaxy Watch 4 40mm/44mm Compatible for Samsung Galaxy Watch 4 classic 42mm/46mm Compatible for Samsung galaxy watch3 41mm Compatible for Samsung galaxy watch Active 2 40mm /44mm Compatible for Samsung galaxy watch Active 40mm Compatible for Samsung galaxy watch 42mm Compatible for Samsung Gear sport Compatible for Samsung Gear S2 classic Compatible for amazfit GTS 3 Compatible for amazfit GTS 2e Compatible for amazfit GTS 2mini Compatible for amazfit GTS 2 Compatible for amazfit pop pro Compatible for amazfit pop Compatible for amazfit BIP U Compatible for amazfit GTR 42MM Compatible for amazfit GTS Compatible for amazfit BIP Compatible for amazfit BIP lite Compatible for amazfit bip 1S Compatible for ZEPP E Compatible for Garmin Forerunner158 Compatible for Garmin Forerunner 55 Compatible for Garmin vivoactive3 Compatible for Garmin vivoactive3 music Compatible for Garmin venu Compatible for Garmin venu Sq Compatible for Garmin vivomove3 Compatible for Garmin vivoMove Luxe Compatible for Garmin vivoMove style Compatible for Garmin vivomove Compatible for Garmin vivomove HR Compatible for Garmin forerunner245 Compatible for Garmin forerunner245music Compatible for Garmin forerunner645 Compatible for Garmin forerunner645music Compatible for ticwatch GTH Compatible for ticwatch E3