SPORT SPEX
ANY Rx - GUARANTEED TO FLOAT !

Lens material options & issues:

CR-39:  the standard optical material used for most plastic lenses today,

Polycarbonate:  lighter & more shatter-resistant than CR-39,

Photochromic glass:  situation variable tint (but heavier).

Polarized gray or brown available in CR-39.

Prescription limitations:  Virtually none !

Corrective solutions are possible ranging from +12 to -13 diopters.