Body Glove Adult Amani Purge Pro Fins Set Snorkel Mask Tempered glass lens meets all ANSI standards. Liquid silicone facial skirt and strap provides soft and comfortable fit. High efficiency channel system designed to maximize thrust and minimize fatigue. Flexible ribbing system for flexibility and minimize fatigue. Quick release buckle allow foot straps to be taken off easily. Submersible dry to prevent water entering into the tube. Silicone patterned mouthpiece for extra comfort. Available in S/M (4.5-8.5), L/XL (9-13)