Yeezy Foam Runner sizing: true to size, but never a half

The Foam Runner is one of the few Yeezys that fits like your normal shoe. Most people take their usual size. The catch is that adidas only made it in whole sizes, so if you’re between sizes you’ve got a choice to make.

True to size for most feet

Stadium Goods put it simply in its 2022 guide: most people find the Foam Runner true to size. If you’re a 10, you take a 10.

That’s different from the rest of the family. The 350 V2 runs about half a size small, and the Yeezy Slide runs small enough that guides say go up a full size. The full sizing on both is in Yeezy 350 V2 sizing and Yeezy Slides sizing.

Half sizes go up

There’s no 10.5 on the Foam Runner. Stadium Goods’ answer is to go up: a 10.5 takes an 11. Going down means your toes reach the front of a hard foam shoe, and nothing about the shape gives you room there.

Wide feet are the exception

The toe box is where it’s tight. Solefeed’s buyer guide says wide feet should go a full size up, and warns that even that may not be enough for a truly wide forefoot. It quotes a US 8 owner with wide feet who went to a 9 and still had sore toes after a couple of hours.

So if you’re wide, a full size up is the starting point, not a guarantee.

The foam gives, a little

The shoe is one piece of molded foam, made partly from harvested algae, per Stadium Goods. Owners quoted by Solefeed say it softens and gives with wear, and that heat makes it more pliable. They also say that only rescues a pair that’s about half a size tight. A full size too small stays too small.

The Foam Runner’s own story, from the 26 Jun 2020 shock drop on Yeezy Supply onward, is in the Foam Runner post.

How to pick

• A whole size with average feet: your usual size.
• A half size: the next whole size up.
• Wide feet: a full size up, and expect the toes to stay snug.

Of all the foam Yeezys, this is the one most people can buy in their normal size.