Are Nike shoes true to size?

Most Nike shoes are true to size (TTS), so buy the size you would normally do.

Do Nike run small or true to size?

Overall, Nike has a reputation for running small. While the length is generally normal, the smaller fit comes from pairs with stiffer padding or a narrower width. On a proper fitting shoe, there should be a little room around the pinky toe and in front of the big toe, without significant heel slippage.