Choosing a Frame

  • S Rat and Standard for average to small size heads.
  • Whistler and Road Trip for average to large size heads.
  • Higher cylinder powers increase distortion in Whistler, Road Trip and Standard frames (usually not felt until cylinders beyond -2.50 in Whistler and Road Trip, and -1.75 in Standard - most people are fine up to -3.00 cylinder.)
  • Click here for Comparison Chart

Rx Ranges

  • Whistler: +/-6.50 (sphere + cylinder)
  • S Rat:any (so far up to -13.00)
  • Standard: +/-5.00 (sphere + cylinder)
  • Road Trip:+/-6.00 (sphere + cylinder)