a. Commanders may authorize the wear of commercial running shoes, calf-length or ankle-length, plain white socks with no logos, gloves, reflective belts or vests, long underwear, and other items appropriate to the weather conditions and type of activity. If soldiers wear long underwear or other similar items, they must conceal them from view with the hooded sweatshirt and sweat pants when wearing the PFU, or the running jacket and pants if wearing the IPFU.
b. Soldiers are authorized to wear commercially purchased gray or black spandex shorts under the PFU or IPFU shorts. The length of the shorts must end above the knee or higher. The commercial shorts must be plain, with no logos, patterns, or obtrusive markings. Soldiers are not required to buy the spandex shorts.