Black down jacket and hat
This suit is simple and fashionable, and the combination of black down jacket and hat is both warm and fashionable, which is very suitable for wearing in the gym. Moreover, this kind of dress style is low-key without losing personality, which makes you stand out in the gym.
If you also like this simple and fashionable fitness suit, try matching a black down jacket with a hat. I believe you will like it, too.