Mott the barber wrote:
I'd guess the clip is from Season 1 based on his "look" and the color/material of the uniform. In Season 2, the uniforms seemed to be a little thicker and less thin spandex like in S1.
I thought the S2 uniforms were exactly the same as S1. I remember reading a story that they couldn't afford new uniforms, otherwise they would have changed them sooner. They compromised and got Wesley a new costume in S2 but made the rest of the characters wait until S3.