On Zero Jacket - windproof and water resistant running/hiking jacket size SMALL. - Undyed-White | Cobalt Small and packable, this ultralight jacket is windproof and water-resistant. Take it hiking, cycling and running – or keep it in your backpack for a rainy day. ☆ Windproof, water-resistant and practically weightless ☆ Slightly fitted sleeve and bottom hems ☆ Treated with a PFOS-free durable water repellent ☆ Constructed with extremely lightweight materials ☆ Stretchable mesh vents under both arms Measurements: Bust (lying flat) approx 20” Length approx 23.5”