Product parameters:SIZE: L/XL S/MAPPLICATION:SNORKELING/SWIMMINGLENS STYLE: FLATWeight: about 600gMaterial: SiliconeColor: White, blackIncluded in the package: diving mask × 1Maintenance: Wash the mask with fresh water after use to keep the vision clear and ensure that the ventilation function is normal. Dry naturally after washing to avoid direct sunlight.Note: When selecting the size, please measure the height between the eyebrows and chin when the mouth is closed. Select S / M less than 12cm and L / XL greater than or equal to 12CM.Nots:1. Please check the size and color before purchasing.2. Does not include items other than the bottle opener shown in the product photo.3. Please note that due to the different monitors, slight chromatic aberration may occur, please understand.4. Due to manual measurement, please allow a difference of 1-3cm, thank you.Tip: Thank you for purchasing our products and wish you a happy life!