Quality materials: Made of premium nylon, breathable and washable. A soft and comfortable feeling brings a good time all day. Adjustable Metal Buckle: Adjustable stainless steel metal buckle design, easily adjust to fit your wrist without taking off your watch. More convenient and practical, no need to measure your wrist circumference to choose the size like the traditional bands. 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