Gray sweater+blue pants
This outfit is really great! Sweaters and pants are very comfortable materials, which can let you exercise freely. And this kind of sports style is also very fashionable, which makes you the focus of the gym. What's more worth mentioning is that this suit is very versatile, and it can be easily controlled whether you go to the gym or travel every day!
If you are also a fan of sports style, try this suit, I believe you will like it, too!