Promate Snorkeling Scuba Dive Mask w/Color Correction Lens Snorkel Combo Set Package included Promate Sea-Slender Color Corrective Scuba Dive Mask (MK275V) and Promate Cobra 100% Dry Whistle Snorkel (SK680) Two-window scuba dive mask fits most of face profiles, crystal silicone skirt and strap, low volume. Tempered optical color correction lens installed by OEM. FULL MANUFACTURERS WARRANTY!!! Snorkel with built-in whistle, and 100% submersible dry top snorkel with One way purge valve. About shipping and handling charge, including tax, please check the Shopping Cart after choosing the color and size. Or you may see other ship and charge options and applicable costs during checkout. Free shipping may apply ONLY in some items and circumstances.