Not a bidon in the traditional sense perhaps, but the Klean Kanteen Classic 800ml is at the front of a revolution in eco-friendly sports bottles. Klean Kanteens are made of stainless steel, minimising plastic production and encouraging you not to simply throw it away: this water bottle should last a lifetime and thankfully it’s easy enough to clean that it will remain looking lovely for that long too! Furthermore, it’s got a generous 800ml capacity.

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The draw-backs? Well it’s not perfect for your bike straight out of the box. You’ll want to invest in a sports cap for it, and a specifically designed bottle cage.

There’s also no squeezing to be had here – so if you’re the kind of cyclist that gets impatient with the speed at which gravity works, stick to a plastic alternative.