Promate Snorkeling Purge Mask and dry Snorkel Combo Set (SCS0096) Combo set includes purge mask (mk285) and dry snorkel (sk890) Built-in purge valve and whistle Soft and high quality silicone Mask buckle on the skirt to fit various profile faces About Shipping and Handling Charge, including tax, please check the Shopping Cart after choosing the color and size. Or you may see other shipping options and applicable costs during checkout.