Once you click a specific garment style a product page with available colors, details, and a sizing chart will be displayed. Clicking on the link labeled "Size Chart", which is located just above the Express Artwork Upload button on the upper left side of the page. The body width measurement is taken across the chest at approximately two inches below the armpit seam. The body length is measured in a straight line from the highest point of the shoulder, down to the bottom of the shirt. If you still have questions on a product, please feel free to contact our Customer Obsession Team!