On Running Zero Jacket - Women's White, L

What Our Gearhead(R) Experts Are Saying:"I brought this along for a few runs where the weather was unpredictable, and it ended up being exactly what I needed. It packs down small, blocks wind well, and doesn't feel like it's weighing you down once you put it on."When the forecast shifts mid-run, we rely on layers that adapt without slowing us down, and the On Zero Jacket is built for exactly that. Whether we're heading out before sunrise or pushing through changing conditions on a long run, it delivers protection that stays light and easy to carry. The ultralight polyamide fabric offers windproof performance with a water-repellent finish to handle light rain and shifting weather. Underarm panels add stretch and breathability, helping regulate temperature as effort increases. Spiral dart construction at the elbows improves mobility, allowing natural arm movement without restriction. When conditions clear, the jacket packs into its own integrated pocket for easy storage. Reflective details enhance visibility, making it a reliable option for early mornings or low-light runs.