Size runs similar to previous versions.
932215
I've been wearing Mizunos for 11 years. Based on other reviews that said that these ran large, I ordered 1/2 size down. Big mistake! I had to return them because they were too short.

I'm giving the shoes 5 stars even though I had to return them because they seem very similar to my old, much-loved shoes.
4360619
Smaller than prior version (v3) of the same style. Disappointing. Each version it seems to fit smaller. The orginal was perfect... Why do they have to change it?
4508223
Product is outstanding as usual.  I replaced my old sneakers (Model 991, size 10.5 EE) with this newer model (size 10.5 EE).  Newer features are well designed, with the only difference being in the design, as related to sizing.  Sizing didn't seem to be exactly the same from older model to new model.  The EEE width was definitely wider on the newer model, but this may may have been due to the design differences of the two models.  Didn't affect the fit of the shoe in my case.
2257677
Great product - the more textured outer material makes it easier to hold on to than the previous version.  The only drawback is that they seem to run slightly smaller than the previous iteration.
2257327
I normally wear a 10 or 10.5, but in these shoes that was waaaay too big. so I ordered a 9 and 9.5 to try on, and these two pair are EXACTLY the same size as each other. they measure identically in every dimension, and feel exactly the same on my feet. I pulled out the insoles and they too are identical size, with the same production number stamped on them. the only difference I can find is the size and date printed on the tongue - the 9 was made 7/15 and the 9.5 was made 8/15. maybe they adjusted sizing since so many people found them too big? I'm glad these shoes are back, but this sizing weirdness certainly doesn't make it easy to buy them.
544944
This is my fourth pair of Cobian Bounce shoes. I've been wearing them for years. This pair is just as comfortable and "bouncy" as the others, with nice arch support. But I agree with others who say that this shoe now runs small. I ordered my usual size 6, but this pair is about 1/2 (and maybe a whole) size smaller than my previous size 6 pairs. Because they are available only in whole sizes, and I suspect a full size larger would be too big for me, I plan to keep these.

I find this braided style strap more comfortable, with a snugger fit, than the styles with fabric straps.

The ordering and delivery experience were both smooth and speedy, as usual.
908480
not like they used to be, but still a good shoe. I take a 4e hard yo find in a size 13, may go to a 14 just a tad snug
790971
I ordered the same size as the last pair (color grey) but these pair fit slightly smaller.  I am surprised that there is a notable size difference between two pairs of the same model shoe.  Other wise enjoying them
4947408
Bought about 15 pairs of previous version, which fit perfectly. Bought two pair of these and found they reduced the size compared to previous, to the point where they are uncomfortable. Then I bought the XXL size and it is too big. Now that Under armour tried to save a few pennies they wound up losing a customer permanently. Penny wise, dollar not-so-wise. It appears from other reviewers that I am definitely not alone in my experience here.
895450
I've loved Simple brand back before they closed a few years ago. Their shoes are made with such quality and still are. Though, their sizing seems to have changed. I was able to get an 8.5 in the old sizing (their shoes were marketed for both genders) and now they have made a more distinct line between their men's and women's shoes and I guess changed the sizing. Had to go down half a size.

The new insole is fantastic and comfy but there is a rim around the insole against side of the foot and the heel that my step often fell into. Not sure why they just didn't fill the entire shoe with they insole instead of this weirdness.

There is plenty of room for your toes in the cap of the shoe and the stitch work is stylish and quality.

I want a red pair and a white pair. I hope they restock their white and get on a red pair soon :)
2476264
10 was the biggest size available, but it was the same size for my 9-year old as the one I purchased three years ago. Back it went.
2966852
Fit was as expected based on previous orders of similar 501's.
4075765
I have the women's version of the Olympus 2 in the dark grey/green.  So far I like them much better than last year's hideously ugly 1.5 version. They are similar in color to the first version (the grey color) but they fit much better overall. The Vibram sole on the bottom definitely has better traction for trail running. The sizing problem of previous models apparently has been  fixed;  I was 9.5 or 10 in the Olympus 1 and now am a 9 in this version.  In fact these might be a tiny bit large.  For reference I wear size 9 in NBs and Asics running shoes and 8.5 in street shoes.  These are wide, especially in the toebox, so if you have normal-narrow feet you might not like them.  There is very little arch support (they are "neutral" shoes) so I use my own insoles.
1385814
I bought last year's model of this shoe from Amazon and it was the best cycling shoe I've ever owned for fit.  Since I'm riding more, I decided to buy a second pair since I've had such a hard time in the past finding a good shoe.  They no longer had my original model but new version 2 was available instead and looked promising.  I ordered the exact size of the original All Road I have, but the fit of the new All Road is not the same.  It's smaller (tight in the toes).  It's still a great shoe but version 2 is noticeably smaller, and they only jump by whole sizes sadly--hence four stars.  Why did PI change a great thing?!  I need about a half size bigger but it's not an option. Looks like a return and a renewed hunt to find EU shoe sizing that actually fits.  Bummer.
2224430
I gave a rating of 3 stars because this shoe ran small.  I have a pair I bought last summer and they are perfect, this new pair runs small but I'm going to keep them.  If they fit the same as the pair from last year, I would have given 5 stars.
1738590
I had a previous shoe of the same size and this is exactly the same so there is no problem
4891329
I purchased two pairs of the old version (39778F) and two of the new version (39779F); for each style, I ordered two sizes: L and XL. Both sizes of the old version were perfectly fine (since there's very little difference between the two, I'm keeping both of those). The new version is a completely different story. XL is much longer than L (which is fine... don't know why that wasn't the case in the old style)... but there is a BIG problem in the calf grippers: they are super tight. On the XL, it's very uncomfortable; on the L, it is so tight it cut off circulation. Can't believe the difference between the old and new versions.