you will be issued a pair of the MARPAT jungles and ICBs.
They started issuing the MARPAT (tan) boots last year at OCS. However, PT starts just as the boots are issued and it is impossible to have them broken in immediately and they are in too short of supply for all of the OSOs to issue a pair of boots before reporting to OCS. Thus, many of the companies are allowing the black boots to be used for PT and humps. Our company (Echo 1st increment) was only allowed to wear the boots issued that increment and we had some bad foot casualties. From what I've heard, the companies since have been allowed to wear the black boots for PT.
-itoh