SUPERIOR MATERIAL: silicone sports wristband is made of highly elastic and skin-friendly silicone with a pin and fold closure design. This silicone replacement band has concave groove strips. The raised silicone dots on the concave grooves can increase the friction between the hole and the nail, so that the strap can be securely locked on the wrist. SIZE CHOICE: The watch strap is compatible with 20mm or 22mm smart watches or traditional watches. The 20mm strap length is 95mm/120mm, fits wrists from 6.3 inches (160 mm) to 7.3 inches (185 mm). 95mm/128mm, fits wrists from 6.3 inches (160 mm) to 7.6 inches (195 mm). Please measure your wrist circumference and watch face width before purchasing. QUICK RELEASE PINS - This watch band is equipped with quick release spring bars. Compared with ordinary pins, we thickened and reinforced the quick release pins to make them stronger and more durable. We also provide you with a tool to help you remove the old watch band, as well as 2 extra quick release pins. MULTIPLE COLORS: This watch band is available in 12 colors. Each color is carefully prepared by us, then. silicone is dyed with vegetable dyes. This silicone watch band does not fade and is safe and skin friendly. You can also buy two-tone straps and wear them in a mixed way, which will make your watch more fashionable, younger and sporty. SOFT & COMFORTABLE: This sports band is lightweight, durable, dustproof, sweat-proof, stain-resistant and designed for running, swimming, cycling, hiking, climbing, camping, training, traveling and other outdoor activities. Its soft and smooth touch frees your wrist. The strap is washable, even if there is dust on it, just clean it with water and it will be as good as new.