SunGod FORTY2s Photochromic Sunglasses: 28 g Sport Glasses (£150)
The SunGod FORTY2s is a lightweight sport sunglass with a photochromic lens that changes tint with the light. We have not tested it ourselves. This page collects the listed specs and the Tredz price for the Iris HV Blue version.
Available now: SunGod FORTY2s 8KO Iris Photochromic Cycling Sunglasses — £150.00 at Tredz, correct at time of writing, 4 October 2026.
What the manufacturer and retailers list
- Lens: 8KO Iris photochromic, listed as 2 mm nylon, with a visible light transmission of 34% to 79%.
- UV protection: listings state 100% UVA and UVB blocking (UV400).
- Coating: listings describe triple-layer scratch resistance.
- Frame: 100% recycled TR90 at 28 g.
- Fit and venting: TPU pads on the arms for grip, built-in ventilation to limit fogging and screwless PopLock hinges.
- Colour: this page links the Iris HV Blue lens. Tredz lists other colourways at different prices, so check the page matches the lens you want.
Where it fits a triathlete’s training
The points below are our reading of the listed specs, not test results.
- Variable light. A photochromic lens is aimed at dawn starts that finish in bright sun, or runs that pass through woods and open road.
- Run and ride. At 28 g with grip pads, the listed design suits both, though we have not tested how it holds up over a hard run.
- Not a dark-lens replacement. The lightest tint is 79% transmission, so check that it is dark enough for you in full summer sun.
Where to buy
Tredz lists the FORTY2s at £150.00 at time of writing, and the link below goes to the same product page.
Related guides
See also our guide to the best cycling sunglasses for triathlon, our review of the SunGod Ultras Air and how to choose cycling sunglasses.
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