The best way to ensure you get the right size for you is to take the proper measurements, including in the chest/bust, waist, hips and arms. Then compare your measurements to the provided Size Guides on the jacket’s individual product pages. You’ll also want to think about what sort of fit you want. Jackets come in three different fit types – Slim, Standard, and Relaxed. Relaxed fit jackets generally hang away from the body and can be worn over heavy mid-layers, whereas slim fit jackets have a closer-to-body-fit and offer more body contouring. Check the Product Specifications section of the jacket’s product page to see what fit it comes in.