The postivie pressure, or anatomincal seal, works on a different principal to the traditional suction seal of other goggle types.
The eye frames on the Barracuda Medalist are shaped all around the to more closely match the tissues they rest on. In addition, at each area, the frame matches the underlying bone structure. This directs the foam into these areas which are more difficult to seal.

Features
Tough frame material.

FOAM eye cup surrounds - no latex or rubber

Adjustable bridge - supplied with a small alan key the bridge can be adjusted to any bridge fitting.

Polycarbonate lenses - anti mist and can be made to almost any prescription. Ideal for high long or short sightedness or large degrees of astigmatism. Lenses are clear as standard.