Breathable Adjustable Fit: Crafted from lightweight nylon and polyester, this vest features breathable mesh panels and adjustable straps to ensure a snug, comfortable fit that reduces sweat build-up and chafing during extended wear Reflective Safety Design: Equipped with reflective elements for enhanced visibility in low-light conditions, this hydration vest improves safety during early morning or evening runs, rides, or outdoor activities in dim environments Lightweight Sturdy Build: Weighing just 300g, this running backpack provides sturdy construction without bulk, making it easy to carry necessary gear alongside hydration without slowing you down during high-energy outdoor pursuits Multiple Activity Versatile: Perfect for running, trekking, cycling, camping, fishing, and travel, this hydration vest provides practical storage and hydration solutions designed to support a wide range of outdoor adventures and fitness routines