HydraPak brand BPA and PVC free 70 fl. oz./2-liter Elite reservoir with large slide top opening Plug-N-Play quick disconnect for convenient tube removal High-flow Blaster bite valve self-seals after each sip and features a twist on/off bar to prevent leaks when not in use Chest Harness system with Velcro elastic bands for flexibility Stowable outer mesh carry-all flap Front pocket for smaller accessories Main compartment with two inner pocket sleeves Reflective branding and zippers Fine-tune attachments on side straps allows a custom fit for smaller riders Larger quick release buckles for easy on and off with gloves