- STAY HYDRATED ON THE GO: This hydration pack features a 2L EVA water reservoir, ensuring you have ample fluid during your sporting activities. The large opening allows for easy cleaning and the addition of ice cubes. An on/off valve controls water flow and prevents leaks, providing a steady supply of refreshing water while you stay active. - PERFECT FIT FOR EVERYONE: Adventure knows no size limits. With its adjustable components, this pack accommodates a wide range of users, ensuring a comfortable fit for both adults and teenagers. Choose from various classic colors to match your style. - ULTRA LIGHTWEIGHT & SOFT: Weighing only 140g, the quick-drying mesh polyester material offers exceptional comfort without bulk. The outer splash-proof nylon fabric protects against spills, while multiple reflective strips enhance visibility and safety during low-light conditions. - THREE COMPARTMENT STORAGE: This hydro backpack also functions as a vest, featuring convenient storage options. The two-layer main compartment provides ample space, while the left front pocket is ideal for your phone. The right front pocket includes two drawstring pockets for easy access to essential items. Use scenarios: 1. Ideal for hiking, where staying hydrated is crucial during long treks. 2. Perfect for cycling, allowing quick access to water and essentials without stopping. 3. Great for running, ensuring you have everything you need at your fingertips while maintaining a lightweight design.