This Bottle comes from a long experience in competitive sports. Particular importance was given to the development of XR1 the use of biocompatible materials, for food use, which comply international standards. The cap polyamide, unique in its class, is impact resistant even in cold winters. The bottle in medical polyethylene is free from unpleasant odors. The cap is equipped with protective cover, useful in the extreme off - road. The design has been studied to improve grip.