If you are going to be cycling any distance you need a hydration system. This can be the traditional bottle and cage or it can be hydration bag like a Camelbak. We also sell specialist hydration systems for triathletes and time trail riders.
Hydration is really important when cycling. Even on cold days you should be drinking regularly. Becoming dehydrated when out cycling can be really dangerous in severe cases but even mild dehydration has a big impact on your performance and concentration.
It is therefore important that you carry a decent supply of water with you on the bike. For road cyclists and commuters a traditional bottle and cage is still the most popular hydration system. For mountain bikers Camelbak type bags have been the standard but recent years have seen an increasing number of people reverting back to bottles and cages as they switch between their mountain bikes and road bikes.