Nike size chart
Jordan 1
This model fits true-to-size. So you can take your own size!
Jordan 3
Overall the Jordan 3 fits true to size, but if you have wide feet you may want to consider sizing up a half size as the style is designed with extra padding in the collars so it can be a bit tight.
Jordan 4
Here we also recommend taking half a size larger, they have a slightly narrower fit.
Jordan 5
This Jordan 5 has a fairly wide fit, so it is advisable to take half a size smaller.
Nike Dunk
The Nike Dunk are true-to-size. They fit true to size. The toebox is cut a bit wider, so even if you have wider feet, the Dunk fits well.