We designed the Slope Runner Vest as a piece of apparel to move with you and fit like your favorite performance tee whenever you're pushing the pace on the trail. It has a combination of ultralight, breathable materials mapped specifically to provide all-day moisture management and next-to-skin comfort. The front is made of soft and limber 100% recycled polyester ripstop. It has a DWR (durable water repellent) finish to slough moisture, mud and sweat, along with mechanical stretch for a forgiving fit. Covering the back is an airy, high-flex monofilament mesh that provides exceptional breathability, a cooling airflow and next-to-skin comfort (it can also hold a hydration reservoir for longer runs). Four front stretch pockets store all your fast-paced essentials; two of them carry gels and snacks and two hold the included soft, flexible 500ml HydraPak flasks for fluids. A low-profile, stretch mesh pocket in back adds extra room for sunglasses, gloves or additional gels. We designed the dedicated electronics pocket for quick access; it has a zipper for security. The Slope Runner Vest closes with a clean, easily adjustable, lightweight bungee cord to personalize the fit, accommodate layers and allow dynamic torso motion. Available in four sizes: XS, S, M, L.