windCELL: highly functional materials provide you a durable yet breathable protection against wind-chill, while helping you to maintain your body temperature at a comfortable level during exercise.-Ventilation slit in the back for improved air circulation at critical heat zones.-Adjustable hood construction for weather protection.-Reflective logo and other reflective items for 360 degrees of enhanced visibility in low light conditions.-Zip pocket at wearers left side for storage solutions.