Promate Snorkeling Scuba Dive Side-View Edgeless Mask DRY Snorkel Gear Set (9080) Promate Avanti TL 3-Lens Edgeless Scuba Dive Mask/ MK390: Three-window style with edgeless technology on sides, which boosts your peripheral vision for a better undersea view. The easy-adjusting swivel buckle, which helps the mask fit a wide range of faces, and the hypoallergenic silicone face skirt, which provides superior comfort throughout your snorkeling trip. Promate 100% Dry Snorkel with Built-in safety whistle housing/ SK680 About Shipping and Handling Charge including Tax, please check the Shopping Cart during checkout. Free shipping may apply ONLY in some circumstances.