When hydration is the goal, this bag makes sure it's the priority. Keep your water bottle secure and easy to access using the cinch closure. Designed for Training. Dimensions: 11.5cm x 23.5cm (4.5" x 9.3"):Volume: 2.5L. Exterior zippered pocket to secure your valuables. Fits most water bottles. Reflective detail. Body: 100% Recycled nylon. Lining: face: 100% Recycled polyester.