New for Autumn/Winter 2017, the Neutron is a breathbale, thermal mid-layer fleece jacket designed for mid to low-intensity activities in cold conditions. Made from Polartec Thermal Pro, the Neutron effectively retains heat using thermal channels woven into the face fabric. Built for comfort, the Neutron has inbuilt 4-way stretch side panels and a snug fitting collar with a micro-fleece lining.