Water bottles and cages are essential items for your bike fluid replenishment is essential for long term activities and fitting a water bottle and cage to your bike is the perfect way of keeping you hydrated. Studies show that loss of fluid equal to 2% of your body mass is sufficient to cause a significant decrease in performance. Bottle cages have also received the lightweight treatment with materials such as carbon titanium and alloy often used. These cages will accept water bottles from 500ml up to 1000ml making it possible to carry 2000ml of fluid on your bike. It's also worth using an Energy drink whilst riding as these will help replace minerals lost through sweating.