Champion Big Men's PowerTrain Vapor Tech Athletic Shorts Big Men's Champion PowerTrain Athletic Shorts with moisture-wicking Vapor technology Brand: Champion - Authentic Athletic Apparel for Big & Tall. Outfitting athletes for over 90 years. Retail tags attached. Fabric:100% Polyester - Light weight. Fabric has a dull shine in appearance. Moisture-wicking Vapor technology keeps you dry even during the most vigorous workout. Side mesh panels for ventilation. See Hand Measurements chart in photo gallery for measurements of each size.