Army Physical Fittness Uniform (APFU) Black with Gold Lettering Army PT shorts. Shell fabric: 100% Polyester. Side Panels: 90% Polyester 10% Spandex. Boxer style liner: 80% Nylon 20% Spandex. ID pocket on front of boxer left leg. 2nd ID pocket inside right front waist. Drawstring enclosed in waist elastic. Tag less label. Easy wear, easy care.