UM-24 Mask: Lightweight low-profile 2-window design for maximum field of view; Pure Silicone Skirt and Strap; EZ adjust buckle technology; High-quality polycarbonate frame; ClearVu tempered glass lens; Fits Adult Medium to Large faces; USP-250 Snorkel: Pure Silicone Flex-Neck and Mouthpiece; Patented Hyperdry Elite Dry Top Technology; Large capacity drain chamber and purge valve for easy clearing; Ortho-consciously designed mouthpiece for ultimate comfort