Special Curved End Design: The curved end watch band for many models such as Rolex,Omega,Longines,Citizen. The listed watch brands we have tested for fit. However, it is impossible for us to test all brands of watches, and more suitable watch models are waiting for you to discover. The watch band is not stiff.Two-way adjustment,the clasp will sit in the middle of your wrist. Our watch band can be cut to size and the stainless steel clasp allows you to adjust strap length by installing pins in different holes inside the buckle.Suitable for wrist circumference 4.92-10.24in. Special attention：Extra-large wrist circumferences only need to be cut with long straps to adjust the size.And medium or small wrist circumferences need to be cut horizontally with both short and long bands（It is recommended to use a blade for cutting） Super Comfortable fit & Tough: This high-tensile rubber strap is built for both durability and flexibility, ideal for outdoor and the sleek style of everyday wear. Retardant,tear resistant, waterproof,Washable,Sweat -proof,long life,comfortable,sporty alternative. Included in this strap are also the stabilising ridges that keeps the watch from shifting while in your wrist,providing airflow and comfort. If you're looking for one until now, the wait is over! Reusable inner and outer packaging (not disposable) includes:1 set watch strap + 2 removal tools + 12 spring bars（20mm 1.8mm thick 4 pieces，20mm 1.5mm thick 4 pieces,16mm 1.5mm thick 4 pieces )+packing case 1