The CamelBak Podium Chill Insulated Bike Water Bottles 21 oz Set of 4 is a high-quality set of water bottles designed specifically for cyclists. With a push cap top and a double wall construction, these bottles are perfect for staying hydrated during long rides. Made of BPA-free plastic, they are dishwasher safe and come in a colorful multicolor design. Each bottle has a volume of 21 oz and the set includes 4 bottles, making it convenient for sharing or keeping on hand for your cycling adventures. The CamelBak brand is known for its durability and reliability, making these bottles a great choice for any cyclist.