This snorkel set is great for outfitting the whole family. Each snorkel mask comes with fully adjustable head straps and a high-grade silicon face skirt which molds to fit virtually any face shape, fit for women and men. Anti-fog coating for clear viewing, tempered glass lens that lasts longer than usual, comfort-fit liquid silicone skirts for water-tight seal, and hypoallergenic silicone mouthpieces for comfort are especially suitable for long-term use in free snorkeling. This scuba diving mask features a single lens design, giving you an unobstructed clear view of the beautiful underwater world. The skirt edge expertly conforms to the shape of your face, giving you watertight performance. With an easy-to-adjust buckle, you will be able to get the perfect fit from this mask. 100% dry snorkel. This is great for those who are swimming in choppy waters or with kids around, which eliminates any chance of surprise water entering the snorkel. This is a great safety feature, especially for those with families. A large purge valve makes cleaning this snorkel easy.