Best Cycling water bottle. Stainless steel Tough canteens in 500ml and 800ml are the best selling products for cycling. Easy to use quench caps makes sipping on the go simple. To keep things chilled go for a Life collection bottle with a sports cap or one of our 600ml vacuum bottles. Classic bottles have a diameter of 70mm and Life collection have a diameter of 65mm. Check with your bike cage but bottles fit most cages.