Self-tinting sunglassesGiant Agos put to the test - cheap but good?

Matthias Borchers

 · 21.08.2025

Inexpensive, but also good? We wanted to know whether the affordable Giant Agos can keep up with the established eyewear manufacturers
Photo: Stefan Frey
With the Agos, Giant offers self-tinting sunglasses at an attractive price. The features: an unusual half-frame construction and extensive accessories. The exciting question is: How does the Giant Agos perform in our cycling eyewear test?

The cycling giant Giant is also known for its functional accessories. We have already been able to convince ourselves of the quality of the cycling giant's shoes (for example the S-Phyre) and high-quality glasses (also S-Phyre). Now Giant is sending the Agos, an affordable pair of sports glasses, for testing. At just under 100 euros, the Giant is the cheapest goggle in the test after the Van Rysel. At first glance, however, you don't have to do without anything.

Like most of the other test candidates, the Giant also comes in a high-quality hard case. In addition to the goggle bag, the Agos also comes with a clear interchangeable lens - a particularly useful accessory that allows the Agos to cover filter categories 0 to 3. The self-tinting filter ranges from category 1 to 3 and the set also includes a clip that can be fitted with the appropriate prescription by an optician.

Generous scope of delivery: In addition to a hard case and goggle bag, Giant also provides an interchangeable lens and an optical insert for riders with prescription lensesPhoto: Stefan FreyGenerous scope of delivery: In addition to a hard case and goggle bag, Giant also provides an interchangeable lens and an optical insert for riders with prescription lenses

The adjustment options, on the other hand, are manageable. On the Agos, only the pleasantly rounded and rubberised nose bridge can be adjusted. The temple tips are fixed.



The rubberised nose bridge is comfortable to wear and can be individually adjustedPhoto: Stefan FreyThe rubberised nose bridge is comfortable to wear and can be individually adjustedThe temple ends are also generously rubberised - but they are not adjustablePhoto: Stefan FreyThe temple ends are also generously rubberised - but they are not adjustable

The Giant is also not fully convincing in terms of visibility. Although it has a fairly large face cover, the lower part of the frame is clearly in the field of vision. Only in a very sporty position does the somewhat unusual half-frame construction rarely disturb the view.

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Athletes with a narrow face will find the Giant less comfortable - it is rather wide and its frame lacks a bit of resilience. In combination with the narrow nose bridge, the Agos sits quite high up and sometimes starts to wobble on rough terrain.

Thanks to the strong curve and large windscreen, the Giant provides good protection from the wind. Draughts only reach the eyes at the cheekbones. The situation is different when it comes to anti-fog protection: The Giant does not have an effective coating and sometimes tarnishes a little in hot situations.



Despite tint level 1, the Agos has a clear and pleasant initial brightness and even has a slightly brightening effect thanks to the light blue tint. The inexpensive sunglasses also scored well in the laboratory. The Agos is in the top third of the test field for both darkening and brightening.

Info & price of the Giant Agos

The lower part of the frame is somewhat unusual and sometimes disturbingPhoto: Stefan FreyThe lower part of the frame is somewhat unusual and sometimes disturbing
  • Price: 99,90 Euro
  • Made in: k. A.
  • Weight: 31,7 g
  • Width / temple length: 149 / 130 mm
  • Nose bridge width / lens height16 / 60 mm
  • AdjustabilityNose clip
  • Filter colour / filter class: 0-3 / blue-grey / 0-3
  • Light transmission measured: 75 - 13 %
  • Fitfor wide faces, variable nose bridge
  • Equipment / special features: hard case; microfibre bag; clear replacement lens; optical insert
  • Alternatives4 frame/filter colours

Evaluation & test summary

  • Self-tinting (40 %): Grade: 1.9
  • Visibility & protection (25 %): Grade: 2.6
  • Fit & comfort (25 %): Grade: 2.3
  • Equipment (10 %): Grade: 1.0
  • Overall grade: 2,1

For just 100 euros, Giant offers an extensively equipped pair of glasses. Thanks to the clear interchangeable filter, the Agos covers almost all visibility conditions, the bluish tint has a brightening and slightly contrast-enhancing effect. The tinting speed is also excellent. Unfortunately, the glasses sit high and loose - the temples are slippery and the frame interferes with the field of vision.

Matthias Borchers is an expert for clothing and accessories in the test department of TOUR. As an amateur cyclist, he has completed the TOUR-Transalp and the TOUR-Trans Austria. His reportage trips from San Francisco to Sakai and 17 trips to the Tour de France with around 30,000 motorhome kilometres are also formative.

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