Ronhill Core Women's Running Jacket Lightweight, breathable and functional running jacket. Great for a run in the park or on breezy training days. Designed to provide lightweight protection, the Ronhill Core Jacket is perfect for cold winter runs. Constructed to provide a perfect balance of wind resistance and breathability, the Core has been developed using Activelite fabric. The wind-resistant fabric works to block out cold wind so you can remain comfortable and warm when temperatures drop. As well as this, a DWR treatment has also been used on the jacket to provide added resistance to harsh weather conditions. The jacket repels light rain and snow so you can remain comfortable and dry when the weather takes a turn for the worst. As well as this, the breathable nature of the fabric allows cool air to flow throughout the jacket whilst, at the same time allowing hot, humid air to escape. The increases in ventilation creates a perfect microclimate for your skin to thrive i