Not sure Duck, have an pair of badly stained Bellvilles' - I'll try to clean them with the boot kit and keep them for SERE. They sell the Bellville 693 at the BX, but I have heard that the Danner is a much better boot. Just want to make sure that XL does not have some weird rule about having the Danner (Post UPT, in the Grad flight until IFF).