On Weather Vest Women's The On Weather Vest for Women provides a barely-there feel with its 360 degrees of ventilated, wind and water-resistant material. This technical running vest provides durable, water-repellent coverage during rainy runs and unpredictable weather. It's also incredibly portable as it can be folded up and stashed within its own water-resistant breast pocket when you don't need it.Reflective On logo featured at left chest and at right sleeve.Flexible blend of lightweight Japanese stretch, ultralight ripstop fabric at torso, and 100% Polyamide fabric upper fabric. Features DWR (durable water repellent) coating at the front. Sizing Small: 33-35" chestMedium: 36-37" chestLarge: 39-40" chestX-Large: 42-44" chest*Measurements refer to body size, not garment size.