Left and right shoes were molded differently
582517
I ordered this pair and the right shoe is splayed 1/2 inch at the heel. The left shoe is a perfect fit, the right wants to fall off and has the behind heel padding shoved down which created a blister on my heal so I  purchased a behing heel insert which resolved the issue
173070
Would of been nice if both shoes fit the same.
I love the way the left foot fits, but the straps on the right are much smaller so I can't get my foot all the way. Comparing the two side by side I can its two different strap lengths..very disappointed
1623404
The left shoe is fine, but the cut of the canvas on the right shoe is noticeably very irregular and uneven. It cuts into the side of my foot when I walk and creates a lot of pain, rendering the shoes useless.
4463558
I received this shoes, and the left foot was perfect and very comfortable, the right shoe really hurt my little toe and the next toe, but when I started looking at the shoe, it had alot of raveling inside and like to much material between those toes, also the outside of the shoe had lots of glue showing, which would've been ok, had they fit right,  I don't think it's so much the vibram brand, I think the pair I got was defective to begin with.  I returned these shoes, they ship them free, but Roadrunner Sports will take 9.00 off price of the shoe for return shipping.
3141548
Right shoe was much tighter than left. Fit is about a size too small.
4361830
if the the left shoe was not defective. I know with this type of stitching it's not going to be perfecto, but looking at it from the back view you could see the left shoe was not aligned to the right one and was very crooked. You can see from a mile away it was defective. Otherwise it a very nice shoe. Returned it immediately. Reordered them from another seller (not Amazon) & absolutely love them.
314173
The left shoe was off a bit, as far as length of one of the ribs. Also, the big toe area where the foot sits, cut into my big toes on both feet, which never happened in the past.
4558702
Both shoes fit the same the first week.  After a month, the left seems looser than the right.
719937
The shape of the left shoe does not match the shape of the right shoe! One shoe shows toe cleavage. The other does not. The cut is IRREGULAR. I am disappointed.
2772466
Stitching is not uniform for both shoes, left shoe has slightly odd stitching at rear of ankel. Thought after few times of usage it will be alright, but it is hurting more and more every time I used it for hiking.
638650
It seems they were not paired. One shoe was larger than the other one. One of the shoe laces was shorter than the other one.
2970364
Fit seemed to be what I expected. However, the left shoe seemed as if it had been wore a time or two before. Weird.
4892644
The left shoe fit like a 9 and was too big(I ordered an 8-1/2) The right shoe felt like there was a defect in it. I just need to take the time and purchase shoes in person. One to grow on.
4375429
The only reason I'm giving these shoes a three star rating is because there was a manufacturer defect and had to send it back, through Amazon, to ECCO (I guess.). The left shoe was fine. Fit true to size and are very comfortable. However, the right shoes's tongue was not the same as the left one and caused a great deal of pain when I took a few steps. I examined it thoroughly and I found out the elastic band ECCO puts into BIOM shoes to connect the tongue and side of shoes together was shorter than the left shoe. Hence the pain inside of right shoe where your big toe's joint starts at forefoot. (Where shoe laces start.) Will update this review when I receive them and try them on. Luckily for me, ECCO has a warranty for manufacturer defects and craftmanship for one year from date of purchase. For the warranty to work, I must buy it from Amazon as the seller not a third party seller. And I did.  I know this because ECCO's website has it listed for their shoes and also I asked a question on Amazon's "Ask a question" and ECCO answered the question.
681871
One shoe is more narrow and off center; the other is more rounded and looks ok.  Must have been made in two different factories.  I wish the pattern cutters from the Right Shoe Factory would have lunch and compare notes with the Left Foot Factory.
4796617
The left shoe fits narrower than the right shoe.  The right shoe felt great!  I am trying to wear the shoes around the house in order to hopefully stretch the left shoe!  Right now the left shoe is uncomfortable!
2506286
Possible the left shoe was irregular it did not fit correctly. Would have been great otherwise. Ended up buying the Lezoline through my table tennis club and it fits great. With proper fit this is a great shoe for the price.