Soft & Smooth Silicon: The Apple Watch Bands are made of great quality silicone, skin-friendly & very comfortable for workdays, workouts, and overnight sleep. Waterproof, lightweight & durable strap, a great affordable option for your Apple watch accessories. Flexible Buckle & Simple Install: Integrated sturdy buckle and strap design, with a silicone loop and peg closure. Compared with the traditional metal buckle, this band design for Apple Watch is much more lightweight & convenient. NO MORE skin irritation Multi-Color & Free Size: Various rich and muted colors, the same color clasp, and the band go great with your outfits and are easy to change for every occasion. 38mm/40mm/41mm Size fits 5.1"-7.1" (130mm-180mm) 42mm/44mm/45mm Size fits 5.9" - 7.9" (150mm-200mm) Compatibility: Lax waterproof sport watch bands are compatible with Apple Watch 38mm 40mm 41mm 42mm 44mm 45mm, Series 7, Series 6, Series 5, Series 4, Series 3, Series 2, and Series SE. All Apple Watch Series Version