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)