The F15MZ features a soft, wrinkle-resistant Performance Microfiber outer shell. Cliff Keen is the first to offer this material for basketball and wrestling officials. This comfortable EZ-Wear fabric maintains its shape and provides an athletic look. The F15MZ is lightweight and cool, featuring a black mesh lining that allows body heat to escape in those hot gymnasiums. An elastic waistband and heavy-duty rib-knit cuffs and collar give the F15MZ a slimmer look and a superior fit.