Circuit FLEX - XL - Matte Black

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Due to their unique frame design, Circuit FLEX sunglasses are an ideal choice when making prescription-corrected absorptive filters for patients with higher refractive errors. The frames provide 8-base protection, but with the removable 6-base adapter in place, lenses can be made to accommodate stronger refractive errors while still benefiting from the close temple fit that an 8-base frame provides!

As stand-alone sunglasses, the Circuit FLEX are a stylish choice for both men and women. They are available in two sizes, large and extra-large, and feature a flexible nylon frame. The rubberized nose and ear pieces provide for a comfortable fit as there are no sharp edges and the wrap around design offers full coverage protection.

The gray polycarbonate lenses that come in the frame block 100% of UVA and UVB light and have 15% light transmission. However, by using Eschenbach’s Custom Solution service, you can create prescription-corrected filters in almost any tint you want! Select from one of our popular off-the-shelf Solar Shield® filter tints of yellow, amber, orange, gray, or plum. Or choose one of our WellnessPROTECT® tints: WP15 Light Amber, WP50/15 Gradient Amber, WP65 Dark Amber, WP75P Darker Amber Polarized, and WP85 Darkest Amber. We can also customize the Circuit FLEX lenses in any tint of your choice!

To all California residents - WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. To learn more click HERE!


  • Lens Material: Polycarbonate
  • Temple Design: Adjustable temples
  • Frame Size: 60 mm
  • Temple Size: 118 mm
  • Bridge Size: 23 mm
  • Rx-able: Yes
  • Tint Color: Gray
  • Wavelength cutoff: 400 nm
  • Accessories: Zippered case and lanyard included
  • Miscellaneous: TR Nylon Frame, full wrap around protection

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