Many of our men's albs have slightly different sizes to them. As part of our men's albs sizing guide, we created separate measurement tables for our various styles. So make sure to reference the right table for the alb you are considering purchasing. Our albs rely on several important measurements, including: back length, chest length, waist length, sleeve length, and neck length. Instructions on how to find these measurements can be found in the measurement guide below. Having somebody measure for you will help you get the most accurate measurement possible. If you have any questions about any of the men's albs styles, how to measure, or questions about the individual sizes, contact our customer service team. They can be reached at (800) 784-6868 and would be happy to assist you.