PROMATE Scope Snorkeling Scuba Diving Prescription Mask with Ultra Dry Snorkel Set - SCS0016 RX

 Promate Scope Prescription Dive Mask (MK245 RX): Do you want to add readers? CLICK HERE to Add to Cart ! Ideal for standard/medium faces (universal fit) Face seal size: 4 1/2" width by  3 3/8" inches height Crystal, liquid silicone injected skirt and strap Double edge comfort seal Ultra low volume Broad peripheral view High quality Tempered glass lenses Optical lenses available from –1.0 to –10.0 by increments of 0.5 (for nearsighted or myopia) Optical lenses available from +1.0 to +4.5 by increments of 0.5 (for farsighted or hyperopia) Bifocal / Gauge Reader lenses available from +1.0 to +4.0 by increments of 0.5. (top plain without prescription, bottom with magnifier reader) Goby Ultra Dry Snorkel with Signal Whistle (SK890): 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.   How to measure your face to see if this mask fit you. If you look in the description there is a face seal size. You would need to measure the width and height of your face. Width is from one outer corner of the eye to the other outer corner and the height is from the eyebrow to under the nose. Please refer to our Prescription Masks 101 page for more information.