FDX sublimation thermal jerseys are designed to meet the demands of High level of winter racing. High Quality, Super thermal Roubaix fabric with a unique warm fleece interior which provides incredible heat retention and keeps your body warm in the coldest conditions. Suitable for long winter cold morning training rides, hard sportive and road racing. Their stylish looking design gives your cycling new dimensions. Chest Size (Inches) : SMALL: 36" - 37" MEDIUM: 37" - 38" LARGE: 38" - 40" XLARGE: 40" - 42" XXLARGE: 42" - 44"