can anyone tell me the differences, if any, between Cooper A2s ...blue label, orange label, number sized jackets, letter sized jackets ? I had an orange label XL which I gave away, they ran small. Ebay has the different labels and sized jackets for sale all the time . Any comments on any differences much appreciated. I believe from FL postings that the Coopers sold to the military were mostly under the Saddlery brand. Thanks.