The CamelBak Podium Chill 21oz Insulated Bike Water Bottle is designed to give bikers and cyclers cold, clean water. This CamelBak Bike Water Bottle is double-wall insulated to keep water cold twice as long as standard bottles. The TruTaste^TM polypropylene and 100% BPA-free construction ensure your water tastes as clean and refreshing as possible. Plus, the CamelBak Podium Bike Water Bottle features an optimized shape designed to fit a wider variety of bottle cages. Stay hydrated on your next bike ride with the CamelBak Podium Chill 21oz. Insulated Bike Water Bottle.