I gave the shoe back. Second time in my life.
David "Train"
It is extremely bouncy in the back of the shoe and unstable. My foot rotated left and right.

The Vaporfly 4 is a lean, mean, mile-eating machine. We trimmed weight in the midsole, outsole and upper from the Vaporfly 3, without sacrificing performance. The result is a lighter, more propulsive all-round racing shoe that's trusted from the mile to the marathon.
Nike Vaporfly 4
The Vaporfly 4 is a lean, mean, mile-eating machine. We trimmed weight in the midsole, outsole and upper from the Vaporfly 3, without sacrificing performance. The result is a lighter, more propulsive all-round racing shoe that's trusted from the mile to the marathon.
Nike ZoomX, our most responsive foam, just got lighter. Running from heel to toe, it unlocks even more energy return than before with a slight midsole reduction, giving you a bouncy feel.
The full-length carbon fibre Flyplate sits at a higher angle compared to the plate in the Vaporfly 3. It combines with a lower heel-to-toe drop to give you a propulsive feel on race day.
We reduced the weight of the outsole by using a thinner rubber compared with the Vaporfly 3.
The engineered mesh helps reduce the weight of the shoe while providing a more consistent fit.
Standard delivery costs £4.50 for non-Nike Members under £99 and Nike Members under £50.
Free store pick-up and free 30‑day returns. Some exclusions apply.
4.6 stars
I gave the shoe back. Second time in my life.
David "Train"
It is extremely bouncy in the back of the shoe and unstable. My foot rotated left and right.
Best Shoes Ever
MichaelH120397825
Phenomenal shoe, haven’t stopped using them!
Colinee807a1e0f2c4d19ba6dfa1c8aeeecdd
These are very light comfy racing shoes, which at 70, recently helped me to a new 10k PB! The only reason I gave 4 stars, is due to the short life these shoes have. The small heel soles soon wear off, and the foam scuffs and disintegrates. A more robust heel sole is required in my opinion.

Nike Vaporfly 4