Just wanted to give a small update, still not sure if there’s different batches for the Mongolia Trail Jacket, but AS USA has been super responsive and compared measurements between the Large and XL jacket over the phone with me - dispatching an XL to try along with a pre-paid return label in case neither work. A+ customer service for sure. @davidlomax , can you answer if the elbow area width was changed at all for the Mongolia/Atacama mesh jackets in a second production run, and how wide it should be there? Edit: I just found the posts a number of pages back where David indicated that shipments post October 2018 would have expanded arm boxes & single compartment rear pouches. It looks like AS USA has the previous stock right now, at least in Larges, as the rear compartment is still divided on the one I got.