ASICS Core 1/2 Zip Women's Top A functional cool-weather running garment, designed to help keep runners warm during cold training conditions. Featuring breathable and lightweight fabrics, the Core 1/2 Zip Top helps to protect you during windy, cold conditions and implements a higher neck design for further protection. Alongside this, the top has a half-zip at the front, allowing you to unzip the front, and experience improved ventilation. A chin guard helps to protect the skin from the zip closure, and prevent nipping or irritation from occurring. In order to support a more sustainable design approach, the top is a construction of at least 50% recycled materials.