Arc'teryx Darter Jacket - Women's [body] Kauss (polyester)| DWR coating A trim fit, lightweight, breathable shell jacket that delivers wind and light weather protection during high output aerobic activities. Combines two fabric to provide essential weather protection with maximized stretch and flexibility Ergonomic fit allows for maximum breathability and increases performance of the garment Two rear stretchy, stash-and-go pockets Reflective blazes on back and sleeves for enhanced visibility in low light