Soft and silicone headband. Fast fit headband system. The -piece soft frame provides easy and comfortable installation. The soft bridge of the nose is retractable and can be adjusted according to each person's structure. The split silicone headband has easy-to-adjust side buckles. When adjusting, pull the two strap ends outward through the horizontal opening. When you get the desired tightness, the spring hinge will lock in place. To release, just press the bottom of the buckle. Female lens height: 4.5cm Lens color: red Frame color: green Lens width: 3.5cm Frame material: Acetate The package includes: 1 x swimming goggles (other not included) Please note that due to the difference in lighting and computer monitors, we cannot that the actual color is the same as the picture. Due to different measurement methods, there may be an error of 1-2 cm. A wide 180-degree view gives you a clear and long-range view of swimming underwater.