WilderMind 2L Sport Hydration Pack - Running, Cycling, Hiking, Jogging Inclusive Package: Bag & 2L TPU Bladder Included. Get it and go! Lightweight Design: minimalist design for maximum comfort Secure interior pocket for carrying keys, wallet, and snacks Convenient Use: bite valve on water tube allows hands-free use Adjustable Fit: shoulder straps adjust for snug fit