CLASSIC COMFORT. The Nike Dri-FIT Legacy91 Hat is a comfortable course staple with a metal buckle closure and a soft sweatband. This product is made with at least 50% recycled polyester fibers. Benefits Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable. Sweatband is soft and absorbent. Adjustable closure lets you personalize your fit.