I would rate this outfit a 7.8 out of 10. The combination of a blue tracksuit with a light blue puffer vest creates a cohesive and sporty look. The layering of the vest adds a nice contrast to the deeper blue underneath, providing a pleasing aesthetic that is both casual and functional. The addition of the white cap introduces a fresh color element, subtly breaking the blue monotony and enhancing the overall balance of the outfit.
However, there are areas for potential improvement. The ensemble could benefit from a pop of color or an interesting pattern to elevate the casual appearance and add more visual interest. For example, incorporating accessories such as a colorful scarf or a unique patterned wristband could provide an extra layer of style.
The use of a black mask is practical, yet it somewhat contrasts with the otherwise lighter and sportier elements of the outfit. Opting for a lighter or more colorful mask could integrate more seamlessly into the outfit.
Overall, this look successfully achieves a comfortable and coordinated athletic vibe, and small adjustments could enhance its style quotient even more.