Wide-i 
Magnetic underwater fog wiper for diving masks and swimming goggles.
http://www.wide-i.comAquamax Corporation
Manufacturer and retailer of the water-free snorkel.
http://www.aquamaxadvantage.com
Prescription Dive Masks
Corrective vision dive masks. Any prescription, bifocals, and astigmatism correction, can be put into any dive mask.
http://www.prescriptiondivemasks.com/
Snorkel Bob's Cybereef
Masks, fins and snorkels presented here are the results of decades of testing.
http://www.snorkelbob.com
Aqua Color
Manufacturer of color correcting dive masks. Order direct.
http://www.aquacolor.com
