To select the right size. Look to our size chart, there are two main measurements, sleeve and chest, We take example of TAG size 42, and if you see in chart the actual SIZE of the JACKET for TAG 42 is 46", this extra 4" is to accommodate for size 42 and 44, and to accommodate the Vest and clothing underneath the jacket. Please note another example If your chest size is 42 you may also select Tag size 40, as it good for 40-42. What ever tag size you select you have choice to select one of three sleeve size S (small) R (regular) and L (large). We can also help to choose the size if you contact us via Amazon message system. Other parameters are also given in chart, please refer to it. Spare buttons are provided. The Argyle Highland jacket is a shorter than regular jacket with gauntlet cuffs and pocket flaps and front cutaway for wearing with a sporran and kilt. It can be of tweed, tartan or solid color material. The Argyle is the standard day wear jacket