Cycling Jackets are to be worn over the top of a baselayer. or undergarment, Jackets are mainly used int he cooler months to help to keep you warm. Cycling jackets feature a variety of things such as back pockets, windblock material, reflective strips and other features depending on the brand and model of the jacket. There are different types of weights of jackets to help you find the right one for you. Cycling jackets also come in a variety of style, sizes and colours to suit your style and body type.