UM-7500 Mask features pure silicone skirt and strap; Lightweight low-profile 2-window design for maximum field of view; EZ adjust buckle technology; High-quality polycarbonate frame; ClearVu tempered glass lens; Fits Adult Small to Medium faces; USP-190 Snorkel features pure silicone flex-neck and mouthpiece; Hyperdry Technology reduces water flow into the snorkel; Large capacity drain chamber and purge valve for easy clearing; Ortho-consciously designed mouthpiece for ultimate comfort