MASK •Tempered glass for safety and clarity. •Wide angle lens provides maximize peripheral vision. •Rigid, interlocking frame crates added support . •Silicone Mask skirt for water-tight seal and comfort. •Purge valve removes water quickly . •Speed fit clips for quick, easy adjustments. SNORKEL •Dry-top snorkel prevents water front entering top while surface swimming. •Safety alert whistle allows you to safely notify other from a distance. •Purge valve removes water quickly . •Silicone mouthpiece.