Foldable Snorkel Mask with Anti-Fog Lens for Clear Underwater Vision & Easy StorageS M: Length 17 cm (6. 69 in), Height 11 cm (4. 33 in) L XL: Length 17 cm (6. 69 in), Height 12 cm (4. 72 in) Effortless Breathing for Underwater Adventures Experience the freedom of underwater exploration with the ProDive snorkeling mask. Its advanced airflow system ensures you can breathe easily without any water intrusion, making every dive a pleasure. Crystal Clear Vision Underwater Equipped with anti fog, high definition lenses, this snorkel mask