In the title it says the jacket is size 43/44R, but in the description it says the chest size is 46. I thought the jacket size is the chest size. I noticed that descrepancy a lot on eBay. Can someone explain the reason for this?
A coat (jacket) size is meant to fit
a particular chest size. As you don't want the jacket as tight as an athletic t-shirt, the actual measurement of the coat will be somewhat larger than the actual measurement of the chest. The difference is usually about 2". If you measure tightly around your chest and it says 40", then your size will be the same (to fit a chest of 40"), but the circumference of the coat will be about 42".