Our replacement sports strap is made of durable and soft The silicone . Easy to dry, make the wrist more breathable and comfortable, prevent skin irritation, and bring you a comfortable wearing experience. And both sides of the sports strap are equipped with lugs, which can accurately and firmly lock the interface of your watch to prevent the watch from loosening and falling off the strap. Sports straps of different popular colors can personalize your watch and suit your mood, dress up to watch and highlight your unique taste. Perfect for boys, girls, men, women, children, making you different, suitable for running, swimming, horseback riding, mountain climbing, hiking, camping, travel, exercise, parties and more outdoor activities.PU leather strap is suitable for watch series SE/6/5/4/3/2/1.Note: 38mm/40mm-S/M, 38mm/40mm-M/L size is 38mm and 40mm watch manufacturing, 42mm/44mm-S/M, 42mm/44mm-M/L size is 42mm and 44mm watch manufacturing, S/ M means small size, M/L means large size! Please choose the correct watch model and size for yourself.