Do not touch the lens with your hands or hard objects. Before use, adjust the nose strap and nose strap to be waterproof and comfortable to wear. To enhance the anti-fog effect, soak the lens in clean water for a few seconds before use. After use, wash with water and store in a cool place. Do not dive in deep water as it will cause painful pressure your eyes. Colour: Black Type: adult, unisex Frame material: silicone Lens material: PC Size: about 17 X 7.5cm (length X width) 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. The quick-adjustment straps and convenient side buckles allow for easy self-picking and removal of the goggles without tugging the hair, and they won't cause scratches even if both hands are wet. This pair of goggles is for daily use, swimming training, or family vacations.