FDX cycling jersey/jacket are Ideal for winter. Super thermal Roubaix fabric with a unique warm fleece interior which provides incredible heat retention and keeps your body warm in the coldest conditions .Flat-lock stitching ensures total freedom of movement .Longer shaped back to suit cyclist riding position .100% Money back guarantee Size Chest (inches) Small 36-37" Medium 37-38" Large 38-40" X-Large 40-42" XX-Large 42-44