Men’s Fitness Fit Clothing, specifically athletic wear, worn to a gym, fitness center or health club for the purpose of physical activity. Which dress is best for gym & Fitness Fit Outfits? Wear a breathable material like cotton or polyester. Product Description Item Type: Sports & Fitness Fit Outfits & Tracksuit – Polyester Material Composition, Mercerized Cotton Fabric, Spandex Collar, Mandarin Collar Pant Closure Type, Elastic Waist Closure Type for Gym, Workout, Exercise, Fitness, Bodybuilding, Outdoor, Sports, Running. Men’s Fitness Fit Outfits made for working out can help keep you cooler and drier during exercise. This is because they are often made with moisture-wicking materials that draw sweat away from your skin. Athletic clothing often has built-in compression, which can help support your muscles and reduce fatigue.