Home»Review»Siroko K2 9:58 Sports Sunglasses

Siroko K2 9:58 Sports Sunglasses

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Velo Insider Rating

22 User ratings
Quality 9.0
Comfort 9.0
Performance 9.0
Sizing and Fit 9.0
Value for Money 9.0

The K2 9:58 by Siroko are their sports specific sunglasses ideal for cycling.  Let’s face it, they look superb!

PROS: Polarized lenses, lightweight and provide all round panoramic sun protection.

CONS: None.

Quality and Comfort

The K2 9:58 is very well made. From this example, you can expect to receive very high quality glasses no matter what colour you pick from their extensive range of combinations.

The glasses are finished nicely, feature a smooth opening and closing action and are very easy to clean.

The lenses are flawless, with a nice shine to the polarized UV protective finish, and the glasses feature a nicely designed Siroko logo on the arms.

While riding you soon forget you’re even wearing them, they fit well and remain comfortable throughout your ride. The nose/bridge shape allows the glasses to stay securely in place, even when you’re sweating your way up an epic climb. The arms feature rubber grippers at the ends to keep then in place when moving around and we found they did a really good job of staying in place without the need to keep pushing them back up your nose.

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The darkening effect of the lenses is very good for summer riding and provides very good definition of light.

The wrap-around design allows the air to pass silently across them with subtle ventilation to your eyes via the four cut out sections along the top edge. When coming to a standstill, they don’t steam up as quickly as some other brands, they stay clear allowing you to safely watch for traffic & pedestrians.

The design also provides good very protection from every angle. Even with the sun in various locations, the wrap-around design stops you from seeing any glare around the edges.

They perform exactly as you would expect a pair of cycling sunglasses to perform, with heaps of style and attitude.

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Size and Fit

Being one-size, they fit extremely well with more than enough flexibility to fit a variety of head shapes and sizes.

As they are designed to provide full UV protection, they do sit quite high on your face, and depending on your forehead height, might sometimes feel as if they are pushing up against your helmet. But this will obviously depend on your physical shape and what type of helmet you are wearing.

The arms are nicely designed and fit around your helmet straps very well. Over or under the straps?… we’ll leave that up to you!

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Value for Money

Priced at 64€ (£56 / $73) they provide a very good level of performance and style for the price. Considering you get a protective hard case, spare nose & ear grips, head strap and cloth, you get a lot of sunglasses for your money. In comparison to other major brand of sports sunglasses, they’re half the price and equally as good.  

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Final Verdict

We think they look great and look even better in black. They provide the right level of protection and ventilation you want while out riding, and at this price, they’re well worth considering.

Velo Insider Rating 9 0





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  1. Randy
    5th April 2019 at 4:09 pm — Reply

    You did not discuss lens change out in this article. Siroko glasses are unreasonably difficult to change lenses. In addition, the plastic piece connecting the nose piece to the frame is small and appears weak. I had a pair that broke during lens change out on the 2nd time. I got *1* ride out of this pair of glasses before they broke. They were glued together to allow for safely finishing a gravel ride. Because they were glued AFTER they broke, Siroko refused to honor the warranty. I don’t know if they expect a cyclist to carry a spare pair of glasses, or just ride gravel without glasses (NOT SAFE). They obviously don’t care about their customers and do not stand behind their products. I would not promote these glasses. I believe you are doing a disservice to your readers by promoting these.

    • 6th April 2019 at 3:48 pm — Reply

      Hello Randy, we can’t comment on Siroko’s glasses with interchangeable lenses, as these glasses are fixed lenses, they do not come with spare lenses to change with as you can see in our photographs. Our review is based on these exact K2 9:58 glasses and we stand by what we found during our review. We have not heard of anyone having issues with Siroko glasses and would recommend anyone with problems to contact Siroko direct. Thank you for your comments.

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