Run in the lightest and most minimalist hydration vest in the INSTINCT PX 3.1L Hydration Pack. This lightweight and streamlined hydration pack features a minimalist design, eliminating unnecessary bulk to keep you moving efficiently. Sitting high for easy access, the pack includes two 600ml hydration bottles, ensuring you stay hydrated on the go. Adjustability is effortless with two adjustable chest straps for a secure fit and two elastic cross-lacings with auto-lock for quick side adjustments. The breathable honeycomb mesh enhances comfort by keeping you cool and reducing moisture buildup during intense activities. This vest features 3.1L of storage for key running essentials.