90s is too vague. Dissect it.
In 90/91 you still had shaped boards, regular (big) wheels, regular pants and shoes and vert was not dead yet. That‘s basically the 80s phasing out.
92/93 was the crazy big pants small wheels era OP probably refers to. Boards were footballs, wheels minuscule, pants ridiculous and to top it off, we put pairs of socks under our tongues to make shoes puffy. Tricks were crazy, pressure flips, varial flips, double flips, late flips you name it. Style and speed did not matter.
94/95 the boards were popsicles and got really small. The smaller the better. The rest (clothes, wheel) slowly started to get back to normal and an armada of super stylers started to emerge, as set out by above posters, e.g. Penny, Kareem Campbell, the Muska etc. Style became important, and gap and railskating took over.
By the second half of the 90s, boards were 8‘ on average, pants loose but not exaggeratedly baggy, shoes normal (think KCK‘s), wheels around 50 mm. Overall more or less like today I would say.
I stopped skating by the end of the 90s and only came back last year so I can‘t comment on what happened in between but from what I hear (slim fit pants) I am not sure I would have liked it.