Customer Reviews adidas Running Ultraboost 21

I’ll start by saying this is my 4th or 5th pair of ultra boost models over the years. This is by far the worst as far as comfort. The plastic lace holders are much higher than previous years and when I wear these for running they’ve sliced into my ankle and drew blood. They aren’t nearly as cushioning and seem to fit narrower than in previous years. Overall, keep ordering older models if you can. If I could have returned them I would.

Totally underwhelmed. Felt like they did nothing for my run. They were along for the ride rather than propelling the ride. Zero arch support.

I am a nurse and have found these to be the only shoes that I can stand on for 12+ hours a day. I won’t buy anything else and have worn alphaboost/ultra boost shoes for three years now. I size a half size up just because by the end of the day my feet do swell a little. These are breathable as well, my feet never get hot.

This new design runs big and wider than the previous models. I've been running in Adidas Ultra Boost for the last 4 years. I like the bounce and fabric. On average I run 12-15 miles per week. While I like the design style and color, the new design (fit) isn't the best for me.

These are super cute shoes, but the fit is not very good at the ankle. You have to size up a little bit if you have wide feet. These are very cute for trend. I personally find the older versions of the ultra boost much better. Definitely overpriced for what you get.

Love the updates look and feel of the 21’s. Been a big fan and buyer of the 20, so glad the upgrade is finally here. Great for running (I’m casual) and just everyday wear.

Love the fit and comfort of these Adidas Running Ultraboost 21. I generally flexuate between a 8 and 8.5 in athletic shoes, but ordered the 8.5 and they are great. Little extra room in the toe box, but not enough to cause movement when running. I purchased these for daily walking combined with light jogging. Very nice looking on the foot as well!

How can something that looks like a cloud ate a marshmallow feel this bad? I hate writing a bad review for one of the most fun-looking shoes I’ve ever bought, but I’m not even going to take them for a run before sending them back. They fit great & look awesome! I absolutely love the knit / no-tongue style, but the footbed is hard as a brick. Seriously! No give & no cushion at all! Did they forget something?! Super bummed, but thankful I ordered them from Zappos, because the return will be way less painful than these Ultraboost 21s!

I have never worn more uncomfortable, to the point of painful, sneakers in my life. I have ultraboost sneakers from 2 years ago that were the most comfortable shoes I've ever worn from the moment I put them on and expected these to at least be the same if not further improved. The soles on the Ultraboost 21 are oddly stiff considering they're ultraboost and have almost no give. The soles of my feet were sore after standing in them for 20 minutes and after a less than quarter mile walk my right foot all the way up the back of my calf was painful sore. The sneakers fit properly and I love the look, but these are absolutely going back. Not sure what Adidas did to these, but I hope they fix it for the future.

I own a pair of UB19 and after 3 years of wearing it, still head over heels in love with it. I'm so disappointed this 21 update is simply not the same. The reason is that my heels aren't locked in place like they are when I'm wearing the 19. So it slides forward a bit with each step and therefore, the top of my toes are constantly rubbing against the knit upper, which also happen to be tighter than the 19. The combined tighter upper and wider heel area make my feet less stable inside the shoes and irritate my toe skin. They claim the UB22 is more molded to the female feet with a tighter heel. Hopefully they fixed the issue because the comfort of UB is still unparalleled. Another reason for returning this is because the additional boost just made the shoes too heavy to run. I run in my UB19 and I feel that's just the right amount of boost. I felt visibly more tired after running in the 21.

Rubbed on my ankle. Would have rubbed blisters. Returned. Unfortunate bc I loved the look and the heel cushioning of the shoe.

Very disappointed. Have spent lots of money on Ultraboost shoes. This was on sale so I thought "yay". Not nearly as comfortable as other utlras I have owned. Like running barefoot on the pavement. Would not recommend

Super comfortable!

These were womens shoes though it doesn’t say it in the description. I searched Ultraboost and found these but it qualify them. They look exactly the same but the sizing is different so they were too small anyway. They are great shoes once we got the mens size though.

Very comfortable at the first wear, great value.

Love these shoes!!! They are so comfortable and fit great. They run very true to size, I am typically a 6.5 and these fit perfect (for reference, I wear a 7 in Nikes). My first ultraboost and so far so good!

These weren’t as heavy as some other critical reviews implied. They were actually pretty light with good arch support. Nice snug fit without being too lose or too tight.

I love it , super.

Perfect shoe for 12 hour shifts as a nurse

Comfort is good but needed 1/2 size smaller

great

I love it super beautifull

I love wearing these! I had a similar pair three years ago and they were tight across where the laces tied so I was a little nervous about getting these but with Zappos return policy I decided to go ahead. That is no longer a problem and I so enjoy the spring in my step with these.

This is my third pair of Ultraboost. They are comfortable, lightweight, and provide excellent support.

Good fir and size.