The Slope Runner Vest has been meticulously designed to accompany you on extended journeys, ensuring you stay on the move with convenient storage for additional layers, nutrition, and easily accessible hydration. The body fabric is made of soft, flexible 100% recycled polyester ripstop with mechanical stretch and a durable water repellent (DWR) finish made without perfluorinated chemicals (PFCs/PFAS); the back is made of an airy, high-flex monofilament mesh for breathability, cooling airflow and next-to-skin comfort.  Low-profile, water bottle-friendly stretch pockets on the vests front fit a variety of flasks and bottles for instant access Two sets of elastic loops hold trekking poles: one sits on the front of the pack for quick-stash access, the other is across the lower back for out-of-the-way storage Hydrophobic monomesh back panel provides maximum airflow and all-day comfort Two 500-milliliter HydraPak flasks are included Weight 196 g Size and Fit Fit: Regular Materials Body: 1.2