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Promate New Fish Eyes Scuba Dive Mask (Rx-Able)/MK260 & Promate Cobra 100% Totally Dry Snorkel with Signal Whistle/SK680:
Newly designed easy adjust buckle system with push button adjustment and all direction swivel functions.
Extra wide and long lenses provide wider peripheral view and downward vision.
Ideal for medium faces - face seal size W4 1/2 * H3 1/4.
Crystal, liquid silicone injected skirt and strap.
Double edge comfort seal.
Ultra Low volume.
*Dry Snorkel with Signal Whistle:
A unique, 100% absolute dry design -- Patented upper valve keeps water from entering the snorkel.
Allows air to easily enter snorkel for clean and unobstructed breathing.
Specially designed cover guards against water splashing into the snorkel.
When the dry snorkel is submerged in water, the patented hinged seal reacts to seal the snorkel, preventing water from entering.
As you surface, the hinged seal swings open allowing air to enter.
Built-in whistle housing. Quick slip-in snorkel keeper.
Pre-curved flexible silicone corrugated low section.
Pre-curved silicone mouthpiece, prevents jaw fatigue.
Silicone purge valve for easy draining.