Please let us know if your size is American, British or European/Asian. In the size field enter the size number followed by A, B or E (for American, British or European/Asian sizing, respectively). If no sizing is specified, then American will assumed to be correct. • Genuine government-issue A-2s and G-1s are Military fit jackets. For looser fit, order one size larger. • All jackets are unisex sized. Use chart above for conversion. • When ordering, please send us your height, weight, and gender to assist us in sending you the correct size. • If there are any questions, please email customer service for your size. Please include all pertinent information, including your height and weight. • Sizes are for heights up to 6'1" (73"). We do not carry sizes for over 6'5" (77") or over 280lbs. • If you require a Long size, but the jacket you wish to order is not available in Long, order one size larger.