2 Leakproof Sports Water Bottles for Marathon with Push Pull Cap, Flask Replacement for Hydration Running Belt (10ounce/280milliliter) Package includes two water bottles and a bonus hydration running belt BPA-free water bottles, super leak-proof pull caps; Pull upward to open the cap and press tightly to close the cap Graduated water bottles offer you a perfect hydration plan in workout and exercise Warm and cold water suggested, you can also change the bottles into your favorite beverage to fit in the belt 100% Satisfaction Guarantee, customer satisfaction is our TOP priority!