Expected weird sizing because of the weird combination of upper and sole. However, I’d suggest just going for your own size. They do fit kinda snug, but that is how I like my shoes personally. Surprisingly comfortable shoes btw! Also, these do look kinda big on feet because of the “traditional” sole with Goodyear welt, so keep that in mind.

It's a very roomy shoe with a lot of space around the toebox. Leather is very soft which gives comfortable feeling.

Since I already owned previous 550's I went true to size in these. They fit exactly the same as any other 550. Materials on these are sturdier compared to the Aime Leon Dore collaborations but don't impact sizing.

Seem to fit true to size when going half a size down compared to Nike. Also well suited for wider feet.

TTS for me, really comfy shoe and the sizing feels similar as Air max 1’s.