We find that as Buzz Rickson’s is made to an original spec, the brand is small compared to modern fits; therefore we advise customers to try at least a size larger than their standard size. We recommend that you contact our stores so our helpful retail teams can offer advice and give exact sizing information before you purchase. The Spec 55-J-14, adopted by the Navy Civil Aviation Bureau since the late 1940s, was the first jacket to be called the "G-1".  The design that started with M-422 is a series of jackets that have been standardized through AN6552 and AN-J-3A jointly owned by Land and Sea, and their appearance and details have not changed significantly.   There is no size notation on the main label, and a size ticket is inserted. Leather tanned with full vegetable tanning tends to be tight, but the goatskin with its flexible fibrous properties eliminates it. Material: Goat Skin Collar: 1/2 inch shearling sheep mouton Label: A Pritzker & Sons Ltd Buzz Rickson's Leather G-1 A Pritzker & Sons, Inc Jacket