Compatible ModelThe fitbit luxe strap only compatible with Fitbit Luxe. replacement strap is a good companion for Fitbit Luxe activity tracker.Special Note: tracker is not included Size Advice Wrist strap Small(S)is for 5.5"-7.1" wrist, large(L) is for 7.1"-8.7" wrist. And you can adjust a suitable size as you want Fastening: Buckle Classic Skin-friendly Material The strap for Fitbit luxe is made of flexible elastomer material, which is skin-friendly, smooth, flexible, Lightweight, sweatproof and waterproof. Comfortable to wear when you exercise, sleep and beyond Security & Easy to InstallThe replacement fitbit luxe bands are very easy to intall and remove. There are Lugs on both sides of the fitbit luxe sport strap, and it will lock your fitbit luxe interface precisely and securely, avoid falling off .And the strap for fitbit luxe with steel buckle and durable TPU fastener ring to protect your tracker from popping off effectively Personalized Look:The slim design make the fitbit Luxe wristband thinner and smaller, more flexible and soft, and make the wrist looks slimmer and move more freely, perfectly fits for women men to wear. And various colors are available for fitbit luxe activity tracker wrist straps to give you a variety of choices. It's a good choice for daily wear and exercise