Run like a pro with this VaporAir 2.0 7L Men's Hydration Pack, voted #1 by Outside Magazine as the "Best Overall Hydration Vest on the Market." Fit is key to avoiding chafing while you run, so with our Adaptive-Fit adjustable sizing system you can have the perfect lightweight, body-mapped pack. Store all your essentials with multiple pockets and stay hydrated with the 2L bladder with quick release valve. When you are properly equipped, long runs will never be the same. Maximum Performance: With the lightweight, chafe-free and breathable materials, this no-bounce vest can store all your running essentials with different storage pockets. Stay hydrated with the 2-liter bladder and front storage pockets that can fit more bottles. Comfort Fit Talk about the most secure tailored fit. The Adaptive-Fit adjustable sizing system allows for the perfect tailored and mapped fit for all men's body types. Features: Unisex sizing to fit all body types (also available in women's specific sizes) Adaptive Fit adjustable sizing system for a tailored fit. Breathable and chafe-free materials for maximum comfort. Equipped with a 2L chamber with quick release valve. Clear zipper pocket for quick view of essentials. Back pocket for storing layers, and more Large main rear storage compartment Front pockets for bottles and flasks up to 22 ounces Reflective hits for 360-degree 60-degree visibility. Nylon, 40% Polyester Specifications: Storage capacity: 427 cubic feet/7 liters Weight without bladder: 8.3 oz/235 g Weight with bladder: 12.2 oz/347 g Wash and care: Easy to love and easier to care for. Hand wash only. Nathan Power Wash is recommended for hand washing. To clean the bladder remove the tubes, rinse the tubes and the bite valve. Turn bladder inside out, rinse