The SEAMO BETTA™ is the best 2-lens mask in the world. It fits most faces and scores high on my, Snorkel Bob's, performance modality graphs. The Seamo Betta™ is $71 with standard tempered lenses (non-Rx).

A complete Rx ensemble with lenses for nearsighted correction is $146 (includes mask AND lenses). Select your Nearsighted Lensbelow.
Custom lenses for farsighted are $226, & bifocal lenses are also $226 (includes mask and lenses).
Astigmatism lenses, custom made to your Rx , are $236 in single vision and $316 for bifocal with astigmatism. It's some dough but consider the reality warp.
Custom lenses take 4-6 weeks. To order these send a LEGIBLE Fax or e-mail a .gif or .jpg of your Rx. Fax 808-735-3139 or e-Mail Rx.