Please, contact us through messaging if you need more information on the product  They are made of tempered glass like the professional scuba diving mask. Cressi Kids Moon Snorkeling Mask, Blue/Lime, 5-10 Years Cressi Brisa Pink/white Black Cressi Calibro - White/Pink Cressi Goggles Thanks to the buckle design it is very easy to adjust the mask strap length. Designed indicatively for kids aged from 4 to 10 years old. Cressi is an Italian brand pioneer in scuba diving, snorkeling and swimming equipment. We ship Monday-Friday 8:30AM - 5PM of EST While some orders will not be shipped out same or next day, they will be delivered by the estimated delivery date. Cressi Brisa Kids Snorkeling Rocks Mask Used Cressi Brisa Kids Snorkeling Rocks Mask - Pink / White Please, note this is a USED ITEM offer. Item will be in good working condition, may show sign of use or wear The Brisa is a kids' snorkeling mask with ultra-clear tempered lenses and a skirt made of hypoallergenic soft liquid silicone. Cressi has been an Italian brand pioneer in scuba diving, snorkeling, and swimming equipment since 1946., The product is covered by a 2-year limited warranty. The frame is constructed from techno-polymer for added strength and durability. The lens exceeds the impact test requirement of American National Standard Z86., 11-1985., The Brisa is designed by Cressi and made in China.