LIGHTWEIGHT PERFORMANCE - The Energen 4 is designed to be the most airy mens running shoes with superior all day comfort. The engineered mesh upper makes them ultra breathable while the FuelFoam Plus midsole adds springy cushioned responsiveness. TECHNICAL REEBOK DESIGN - Merging the best features of the Energen 2 and 3 models, the new Energen 4 brings you the most comfortable athletic mens shoes with the perfect balance of style and function for running, walking, gym, or general workout. DURABLE RUBBER SOLE - Providing solid traction and stability wherever you run, the Energens are the go-to sneakers for men with an active lifestyle. Simple, supportive and sleek, they are made to withstand heavy wear as everyday sport tennis shoes. TIMELESS STYLING - More than just men's running shoes, the Energen represents a way of life. With a classic look that never goes out of fashion, this is the sneaker that does it all with style (just like the man who wears it). MULTI PURPOSE - For marathon runners and casual joggers alike, available in versatile all black or white in men's shoe sizes 6.5 to 14.