The infusion of 3D Micro Mesh, ultra-lightweight materials, and reflectivity make the CamelBak Women’s Circuit Hydration Vest the preferred choice of trail and ultra runners looking for a minimalist running vest. The 3D Micro Mesh provides multi-directional air flow, while the dual adjustable sternum straps improve adjustability. Our durable running vest features a secure zippered phone pocket, a stretch overflow pocket perfect for rain gear, and pockets specifically designed for Quick Stow flasks.