Select your "chest size" measurement above and you'll see all blazers with your size in stock. This is a convenient way of shopping and saves time. Suits Outlets uses US standard men's size and all blazers and pants are true to size. All chest sizes come in three length: R(Regular), L(Long) and S(Short). An easy way to explain the difference between "Regular", "Long" and "Short" is, for "Short", both the sleeves and length of the overall jacket will be 1" - 1.5" shorter than "Regular", and same applies to "Regular" vs "Long". If you are shopping with blazer, please select exact chest size. Do not order one size up for blazer, extra space is included in the blazer design.