Promate Raven Frameless Scuba Dive Mask/ MK500: Frameless design reduces weight and teardrops shapes provides better view of both upward and downward.nFlexible swiveling, and easy adjustable buckles system makes fit a wider range of faces than traditional frame mask.nPromate Dry Snorkel with colored whistle housing/ SK890: The fully submersible dry top snorkel with one way purge valve. Quick disconnect and rotatable retainer design easily make accommodation of snorkel from mask.nAbout Shipping and Handling Charge including Tax, please check the Shopping Cart during checkout. Free shipping may apply ONLY in some circumstances.nPromate is known for the designing, manufacturing, and distributing state-of-the art diving equipment. The Raven is an ideal mask for a medium face. Tempered glass provides a crystal clear view of what’s around you and its double edge seal is sure to keep the water out. The mask includes a crystal, liquid silicone injected skirt and strap. Quick Release Swivel Buckles - allow easy removal of strap and inclinations in various angles.