The Under Armour UA CG REACTOR HYBRID JACKET features the original ColdGear Reactor material. Comfortable material with STORM1 technology will keep you warm and dry in bad weather. The Reactor product collection is perfect for training in colder weather using different materials, technologies, and graphic design. The insulation features a unique quilted pattern to trap heat yet allow air circulation. With elastic fleece panels in the underarm area for mobility. Three zip pockets. The model can be packed into a pocket for easy storage. The hem is adjustable.