Koo Open Cube sunglasses review

Colourful glasses built to suit a range of face sizes

Cycling Weekly Verdict

Crystal clear lenses fitted into a frame which provides tons of adjustability, and loads of colour options to boot. The build quality doesn't quite mirror the price tag and we'd like a smaller carry case, but other than that these come highly recommended.

Reasons to buy
  • +

    Lots of adjustment

  • +

    Size options

  • +

    Clear lens

  • +

    Anti fog

  • +

    Wide range of colours

  • +

Reasons to avoid
  • -

    Could do with a smaller carry case

  • -

    Build quality could be improved

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

I have a small face. I'm average height, with average size feet and average sized hands - but finding glasses and helmets to fit me has always been a struggle. My standard approach is to order junior/youth or Asian fit options, but this does limit choice.

Enter: Koo, the glasses range from helmet giant Kask. These glasses have a lot going for them - they'd be a great buy for an individual with a 'normal' sized face too, but I'll start with their adjustability as it was the feature which impressed me the most.

Thank you for reading 20 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

Michelle Arthurs-Brennan

Michelle Arthurs-Brennan the Editor of Cycling Weekly website. An NCTJ qualified traditional journalist by trade, Michelle began her career working for local newspapers. She's worked within the cycling industry since 2012, and joined the Cycling Weekly team in 2017, having previously been Editor at Total Women's Cycling. Prior to welcoming her daughter in 2022, Michelle raced on the road, track, and in time trials, and still rides as much as she can - albeit a fair proportion indoors, for now.