Just got them in 44 1/2 as my 4%.
Just ran with the next% on the left and the 4% on the right. No difference in size.

The next% is a lot higher: at least 2 cm.




The next% does not have the clicking sound when you walk on your heels as the 4%. I did not remember though if the 4% had that effect when they were new.

What I do not like of the next% is that there are slits in the front if the sole. Looks like a catch for small stones. Probably I will close those slits with silicone.

Anyway, got an IM in 3 days and because the main rule of triathlon is to not try out new things in races, I'll run there with my "old" 4%s.

In the next couple if weeks I'll try the next% and see if they are as fast as the 4% (I do not think 1 % faster is noticeable, but 4% is and the 4% are for me a lot faster than all of the former shoes I had on all distances. I did a 5k under 19 minutes a couple of weeks ago: that was crazy with my nearly 58 years).