Vaporfly 4% Flyknit Sizing

Tough call. If you wear 10 in Pegs, I think you'll find yourself in between size 10 and 10.5. I went with 10, but I prefer racing flats a little snugger. Also, since the upper is a single piece of mesh, there have been some reports of slippage around the heel, which would be another vote for the 10. Running Warehouse, on the other hand, recommends going up a 1/2 size. I think it comes down to personal preference. If your Pegs are already on the snug size, I might go up a 1/2 size.

FlyknitVaporflySizing wrote:

What's the fit like of the Vaporfly 4% Flyknit?

I wear Pegs size 10, should I get Vporflys in size 10 or 10.5?

Thank You

I'm wearing them in the same size, 10.5 but I have higher arches. If I had more flatter arches, I'd go 10 on Pegs, and 10.5 on VPs.

Answer to your question and a bit more ...

I have 2 pair of the original VF's, size 10.5, each with about 200 miles on them. Just got a pair of the Flyknit VF size 10.5 and they are almost too snug. They feel like a different shoe. Much more of a glove like fit. Much more snug than my Peg turbo 10.5.

Definitely go with the larger size if you’re in doubt. My original Vaporflys were both size 12. I went 12.5 in the Flyknit version and they still feel a bit short. Will definitely have to go with a thin sock.

High arches here too! So will purchase the 10.5. ty

I wear a 9.5 in brooks and new balance trainers and I went with a 9.5 in zoom Vaporfly flyknit and I think they are perfectly snug although I haven’t tried running in them much yet. I have a pair of them in a 9.0 too just in case but will most likely sell them online for a profit

I wear size 9.5 in Peg 34/35s.

Happy with the 9.5s I bought in the knit vaporfly 4%. Everyone said to size a half size up. Glad I stuck with guy that I've never worn a 10 in any Nike including Vic's.

You should get the size 10. I had the Turbo also and it fit with the same size. Also the fit is similar to the React Fly and Zoom Fly if you want to try those on. The Flyknit seems snug at first but since it's like a sock, you'll want it to feel that way.