Nothing is worse than paying resell for a pair of sneakers that doesn't fit. Resale platforms like StockX don't accept returns for sizing issues. This guide covers how every major brand fits so you can buy the right size the first time.
The Jordan 1 is one of the most consistent sneakers for sizing. Go with your regular Nike size. Leather will break in slightly.
These mid-cut Jordans have more interior volume. If you're a solid 10, go 10. If you're 10/10.5, go 10. The toebox has extra room.
The patent leather around the midfoot doesn't stretch. The Jordan 11 runs narrower than most Jordans. Wide-footers should always go up.
Modern Nike Dunks fit true to size. Nike SB Dunks have extra padding and may feel slightly tighter — consider half up for SBs.
Air Max models run narrower than Dunks and Jordans. The AM95 and AM97 are especially tight around the midfoot. Go half up if you have wide feet.
The 350 V2 is notoriously tight. If you wear Nike 10, go Yeezy 10.5. The Primeknit upper doesn't stretch enough to compensate.
Yeezy Slides are the most size-tricky sneaker on the market. A Nike 10 should buy a Yeezy Slide 11. They also only come in whole sizes, making it even more important to size up.
New Balance runs true to size across most models. The advantage: NB offers wide widths (2E, 4E) unlike Nike and Jordan. If you have wide feet, New Balance is your best friend.