TUSA Sport Adult Imprex 3D Purge Mask and Dry Snorkel Combo Fits Adult Medium to Large Faces Hypoallergenic Crystal Silicone Skirt and Strap Hyperdry Purge Technology for ease of mask clearing Hypoallergenic Crystal Silicone Flex-Neck and Mouthpiece Large capacity drain chamber and purge valve for easy clearing Hypo-allergenic silicone 3-window design for panoramic views with purge technology Elite dry top snorkel 3 Year Warranty