Description We designed the Slope Runner Vest to help you keep moving during long-haul days, with enough storage for extra layers, nutrition and hydration that’s organized and within easy reach. Soft, Lightweight and Breathable 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 Low-Profile Stretch Pockets Low-profile, water bottle-friendly stretch pockets on the vest’s front fit a variety of flasks and bottles for instant access Trekking Pole Carry 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 Monomesh Back Panel Hydrophobic monomesh back panel provides maximum airflow and all-day comfort HydraPak® Flasks Two 500-milliliter HydraPak® flasks are included Four Sizes for a Personalized Fit Available in four sizes/chest measurements: XS: 30″‒33″; S: 34″‒37″; M: 38″‒41″; L: 42″‒48″ Body: 1.2-oz 100% recycled polyester stretch-woven ripstop with a durable water repellent (DWR) finish made without perfluorinated chemicals (PFCs/PFAS). Mesh panels: 7.1-oz 72% recycled nylon/28% spandex. Back panel: 8-oz 100% recycled nylon monomesh. Made in Vietnam. Patagonia Slope Runner Vest - Mountain Factor