The RACE BELT is a hip pack that has been optimized for use in racing with fastening options that gives the rider direct access to tools and spare parts. It's a snug-fit and comfortable carrier system that can be worn under the jersey.
A normal water bottle freezes at 20 degrees in roughly 20 minutes while riding, so you can't get water out. This happens because of water slopping around and then the cap freezes up. It's no fun riding 30-40-50 miles without water!