Lightweight Design: Made from ultra-light, breathable materials, weighing only 300 grams, ensuring a burden-free running experience. Multi-functional Storage Space: Equipped with multiple storage compartments, including a front elastic pocket, side mesh pockets, and a main compartment, conveniently storing essentials like water bottles, phones, energy bars, and keys. Hydration Bladder Compatibility: Supports 1.5L-2L hydration bladders, featuring a quick-access drinking tube for easy hydration on the go. Adjustable Chest and Waist Straps: Freely adjustable to fit different body types, ensuring a secure and snug fit to prevent bouncing during runs. Reflective Strips: Enhances visibility for safer running in low-light or nighttime conditions. Breathable Back Panel: 3D mesh padding effectively wicks away sweat and promotes airflow, keeping your back cool and dry. Unisex Design: Suitable for all body types, specifically designed for short-distance trail running.