Measurements are given by suppliers and may have a discrepancy of up to 2 inches (5 cm).Helpful hint! Take one of your own items, measure it, and compare those dimensions to the ones listed in this size chart.A LengthPosition the start of the tape measure at the collar's edge at the top (high point shoulder) and stretch it down to the item's end.B WidthPut the tape measure at one side of the chest and extend it across to the opposite side.C Sleeve lengthStart measuring from the middle of the back of the collar, follow along the sleeve's top seam up to the shoulder, secure the tape at the shoulder, and continue down to the sleeve's end.