Service Uniform Requirements
Note: The below apply to the full dress service uniform, the longsleeve shirt and the shortsleeve shirt.
Tie (Men). The polyester herringbone twill tie is worn with the service dress coat. This tie is mandatory when wearing the service dress uniform, including semiformal and the longsleeved shirt. The tie is optional with the shortsleeve shirt.
The tie must not have a design or sheen. It can be 2 or 3 inches wide and may be tapered at the center with a pointed end or untapered with a square end. The fabric for ties can be polyester, wool, synthetic, or blends. Woven and pretied ties are optional.
Tie Tab (Women). The tie tab is a blue inverted-V, constructed of a polyester herringbone twill fabric, with self-fastening tails. This tie tab is mandatory when wearing the service dress uniform, including semiformal and the long-sleeved shirt. The tie tab is optional with the shortsleeve shirt.
Skirt (Women). The skirt hangs naturally over the hips with a slight flare. Skirt length is no shorter than the top of the kneecap or longer than the bottom of the kneecap. The silver tip of the belt extends beyond the buckle facing the wearers right, with no blue fabric showing between the buckle and belt tip.
Flight Cap. The flight cap is worn slightly to the wearers right with the vertical crease of the cap in line with the center of the forehead, in a straight line with the nose. The cap will be approximately 1 inch from the eyebrows. When not worn, tuck the cap under the belt on either side, between the first and second belt loops. Do not fold the cap over the belt. The service hat may be worn in lieu of the flight cap.
Hose (Women). Hose must be worn with the skirt. Hose must be a commercial sheer nylon in neutral, dark brown, black, offblack, or dark blue shades that complement the uniform and the individuals skin tone. Do not wear patterned hose.
Footwear:
Low Quarters. Shoes are black oxford; lace-up style with plain rounded toe or plain rounded, capped toe; without perforation or design; smooth or scotch-grained leather or man-made material, high gloss or patent finish. The sole will not exceed 1/2 inch in thickness and the heel will not exceed 1 inch in height (measured from the inside front of the heel). The shoe may have a low wedge heel. Plain black socks without design are worn with low quarters. Women may wear hose.
Pumps (Women). Pumps are authorized for wear with the blue service uniform. The pumps will be a plain black commercial design without ornamentation, made of smooth or scotch-grained leather or manmade material, high gloss or patent finish. The height of heels should be suitable to the individual, but no higher than 2 1/2 inches (measured from inside sole of the shoe to the end of the heel lift). Do not wear shoes with platform soles, extra thick soles, or extra thick heels.
Combat Boots. Combat boots may be worn with the service dress uniform or blue service uniforms (womenslacks only). A description of combat boots is provided under the section for BDU, on the following page.
Above information derived from AFPAM36-2241V1, PME Study Guide

