adidas Women's Ultraboost 21 Running Shoe

4.5 4.5 out of 5 stars 4,908 ratings
Price: $65.79 $111.00 Free Returns on some sizes and colors
Free 7-day try-on available for some sizes and colors.
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Black/Black/Grey
Size Chart
US Footwear
Brand SizeUK SizeEuropeJapanHeel to toe (in)
53.5362208.7
5.5436.672258.9
64.537.332309
6.55382359.2
75.538.672409.4
7.5639.332459.5
86.5402509.7
8.5740.672559.8
97.541.3326010
9.584226510.2
108.542.6727010.4
10.5943.3327510.5
119.54428010.7
11.51044.6728510.9
1210.545.3329011
12.5114629511.2
1311.546.6730011.3
13.51247.3330511.5
1412.54831011.7
14.51348.6731511.9
1513.549.3332012
15.5145032512.2

Product details

Fabric type
100% Textile Synthetics
Origin
Made in USA or Imported
Sole material
Rubber
Outer material
Rubber

About this item

  • Women's running shoes built for a smooth and energized ride
  • Sock-like fit hugs the foot; Lace closure provides secure fit
  • Stretchweb outsole flexes naturally for an energized ride; Continental Rubber gives you superior traction; Textile lining for comfort; S-curve heel shape adds support; Boost midsole for cushioning
  • This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. No virgin polyester.
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Product details

  • Product Dimensions ‏ : ‎ 11 x 4 x 7 inches; 9.8 ounces
  • Item model number ‏ : ‎ KYQ94
  • Department ‏ : ‎ womens
  • Date First Available ‏ : ‎ June 1, 2021
  • Manufacturer ‏ : ‎ adidas
  • ASIN ‏ : ‎ B087F8SJ7G
  • Customer Reviews:
    4.5 4.5 out of 5 stars 4,908 ratings

Product Description

These women's Ultraboost shoes are designed to give runners the comfort and responsiveness they need. An adidas Primeknit upper is stretchy and has a sock-like fit. A Linear Energy Push system increases forefoot and midfoot stiffness. The S-curve heel eliminates slip, and the signature Boost cushioning returns energy to your stride.

Customer reviews

4.5 out of 5 stars
4.5 out of 5
4,908 global ratings

Customers say

Customers like the comfort, quality, appearance and support of the shoes. For example, they mention that it hugs their feet, it holds up and still looks great. Some appreciate the value. That said, some complain about the ease of use. Opinions are mixed on fit and versatility.

AI-generated from the text of customer reviews

193 customers mention150 positive43 negative

Customers like the comfort of the shoes. They mention that it hugs their feet, has a lot of cushioning when they walk, and does not hurt their feet after working long hours. Some customers also say that the shoes breathe well.

"Great running shoes! Very comfortable" Read more

"Takes some time to adjust lol but definitely good comfort I work at an airport and stand on my feet all day , my heels were killing me for sure this..." Read more

"...The shoe hugs the feet, which I am not necessarily a fan of. The laces are mostly decorative, basically...." Read more

"I work 12 hours as a nurse. This shoes is so comfortable. Does not hurt my feet after working long hours." Read more

91 customers mention73 positive18 negative

Customers like the quality of the shoes. They mention that they are well made, great for running and walking, and hold up well. Some say that the shoes are structured and great for high impact activities.

"Great running shoes! Very comfortable" Read more

"...make sure to not wear any thick socks in this shoe for they have a good form for sure but they can be tight and order half size up for sure" Read more

"Excelent!" Read more

"These shoes provide great support for running and walking. The heel is a little ridiculously large and looks funny when worn with shorts...." Read more

59 customers mention48 positive11 negative

Customers like the appearance of the shoes. For example, they say it looks sharp, the laces are decorative, and the color combo is great.

"...The laces are mostly decorative, basically. I love the rose color I chose and get compliments on them...." Read more

"I love the style of shoe and I also love that on Amazon’s website it is 10 times cheaper. This is a great option for every day use or walking...." Read more

"...As of now my only criticism is the shoe laces. Looks much better with blue laces as opposed to brown/tan laces that came with the shoes." Read more

"...Are the legit ultra boosts from Addidas. Love the colors and style...." Read more

26 customers mention23 positive3 negative

Customers like the support provided by the shoes. They mention that it offers great toe-hill-ankle support, and the extra sole padding on the bottom provides great arch support. They also say that the shoes are comfortable and full of support for athletics.

"...heel; but the work-out itself is fine in these shoes, as they provide lots of support and shock absorbency." Read more

"These are crazy comfortable and have good support. The foam sole protects my knees and heels from my heavy foot strikes." Read more

"...They are less flexible. They still offer great support, but I prefer the shoes that are mostly (or all) the mesh material on the upper around the..." Read more

"Great toe-hill-ankle support...." Read more

21 customers mention18 positive3 negative

Customers find the value of the shoes hard to beat for the price. They also say it's a great buy and money well spent.

"...Thanks, Adidas, for making such a kickass, reasonably priced shoe. You have a customer for life if you never stop making Ultraboosts." Read more

"New in box, great price" Read more

"...These are both durable and affordable...." Read more

"I love this shoes and they're worth every penny, the only thing it's that I wish I would have listened to the reviews saying that they run small...." Read more

114 customers mention54 positive60 negative

Customers are mixed about the fit of the shoes. Some mention that they fit perfectly, hug their feet wonderfully, and the insoles fit perfect in the shoes; while others say that the fit is tight, the heel is ridiculously large, and they feel big and bulky just out of the box.

"...socks in this shoe for they have a good form for sure but they can be tight and order half size up for sure" Read more

"Had to size up, but love the fit." Read more

"...The heel is a little ridiculously large and looks funny when worn with shorts...." Read more

"These are crazy comfortable and have good support. The foam sole protects my knees and heels from my heavy foot strikes." Read more

23 customers mention10 positive13 negative

Customers are mixed about the versatility of the shoes. Some mention that it offers great support and reduces fatigue from a long day on their feet, while others say that it's useless for running, not functional for exercising, and not good for work.

"...They aren't the best for working out as far as sitting for stretches because of the large, protruding heel; but the work-out itself is fine in..." Read more

"...Still love this shoe, and it offers great support and reduces fatigue from a long day on my feet...." Read more

"...Totally not functional for exercising, I practically trip over these shoes." Read more

"...these because of reviews I have read and that they are good for running with soreness in the balls of the feet. Well, it didnt help...." Read more

22 customers mention6 positive16 negative

Customers find the shoes difficult to use. They mention the tongue is attached so it's not the easiest to slide on. Some say the laces are very short and hard to tie. They also say the shoes are bulky and take a lot longer to break in.

"Takes some time to adjust lol but definitely good comfort I work at an airport and stand on my feet all day , my heels were killing me for sure this..." Read more

"...into this small opening into a sock-like fit, then there's no way to tighten the laces...." Read more

"...speed was 5:50 but doesn't feel very safe... As I said, they're good for easy days" Read more

"...Consequently, I had a hell of a time getting them on. Once I did, they were too short...." Read more

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Top reviews from the United States

Elizabeth Brawley
5.0 out of 5 stars Great support
Reviewed in the United States on February 19, 2024
Size: 9.5Color: Black/Black/GreyVerified Purchase
Great running shoes! Very comfortable
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NorCalCyclistDad
5.0 out of 5 stars So comfy
Reviewed in the United States on February 23, 2024
Size: 11Color: Orchid Tint/Orchid Tint/Violet ToneVerified Purchase
Had to size up, but love the fit.
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Sumaira K.
5.0 out of 5 stars Pretty good
Reviewed in the United States on May 15, 2023
Size: 10Color: Black/Black/BlackVerified Purchase
Takes some time to adjust lol but definitely good comfort I work at an airport and stand on my feet all day , my heels were killing me for sure this took away all the sharp pains for sure just make sure to not wear any thick socks in this shoe for they have a good form for sure but they can be tight and order half size up for sure
6 people found this helpful
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Amazon Customer
5.0 out of 5 stars Great
Reviewed in the United States on April 2, 2024
Size: 8.5Color: OrangeVerified Purchase
Excelent!
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Amazon Customer
5.0 out of 5 stars Great
Reviewed in the United States on April 2, 2024
Excelent!
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kpalm
4.0 out of 5 stars Good running/walking shoes
Reviewed in the United States on April 3, 2023
Size: 6Color: Ash Pearl/White/Halo IvoryVerified Purchase
These shoes provide great support for running and walking. The heel is a little ridiculously large and looks funny when worn with shorts. I see the functionality of the large heels, though, because they are easy to slip off. The shoe hugs the feet, which I am not necessarily a fan of. The laces are mostly decorative, basically. I love the rose color I chose and get compliments on them. They aren't the best for working out as far as sitting for stretches because of the large, protruding heel; but the work-out itself is fine in these shoes, as they provide lots of support and shock absorbency.
One person found this helpful
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Marcella
5.0 out of 5 stars super comodos
Reviewed in the United States on March 9, 2024
Size: 6.5Color: White/Black/Solar YellowVerified Purchase
aun tengo la duda como saber si son originales o no
ya q el precio es mucho mas economico q en la tienda adidas
One person found this helpful
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michelle
5.0 out of 5 stars Comfortable
Reviewed in the United States on February 15, 2024
Size: 6.5Color: White/White/GreyVerified Purchase
I work 12 hours as a nurse. This shoes is so comfortable. Does not hurt my feet after working long hours.
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Diana
3.0 out of 5 stars Too tight in the instep
Reviewed in the United States on January 25, 2024
Size: 6Color: Black/Black/GreyVerified Purchase
I used it to take my dog ​​out for 30 minutes and the top of my foot hurt and my heel was too tight. It was unbearable, I had to return them. Maybe I'll try ordering a half size up.
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Diana
3.0 out of 5 stars Too tight in the instep
Reviewed in the United States on January 25, 2024
I used it to take my dog ​​out for 30 minutes and the top of my foot hurt and my heel was too tight. It was unbearable, I had to return them. Maybe I'll try ordering a half size up.
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One person found this helpful
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Top reviews from other countries

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Tania Guatemala
5.0 out of 5 stars Uno de mis tenis favoritos de ahora en adelante
Reviewed in Mexico on March 6, 2024
Size: 8Color: Ice Purple/White/Rose ToneVerified Purchase
Me encantaron, son super cómodos y son justo los colores que estaba buscando
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Aurora Morales
5.0 out of 5 stars Hermosooos
Reviewed in Mexico on August 31, 2023
Size: 6Color: White/Black/Solar YellowVerified Purchase
Súper cómodos y ligeros ya sea que salgas a correr trotar o bailar sentirás que caminas en las nubes, ademas súper bonitos
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Aurora Morales
5.0 out of 5 stars Hermosooos
Reviewed in Mexico on August 31, 2023
Súper cómodos y ligeros ya sea que salgas a correr trotar o bailar sentirás que caminas en las nubes, ademas súper bonitos
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mickey doodles
4.0 out of 5 stars Slide in shoes no socks necessary
Reviewed in Canada on June 1, 2022
Size: 6.5Color: Black/Black/Violet ToneVerified Purchase
Wanted a comfortable workout, walking shoe. These are both perfect fit and comfort to do long walks or hard workout.
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Queenie
4.0 out of 5 stars Great
Reviewed in Canada on May 10, 2022
Size: 6Color: Non-dyed/Black/Night FlashVerified Purchase
Very comfy no complaints
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Kevin Tay
5.0 out of 5 stars Perfect running shoes
Reviewed in Canada on March 13, 2022
Size: 11Color: Black/Black/Violet ToneVerified Purchase
I noticed this particular style of shoes doesn’t even have different gender listing under the adidas website. I normally wear men’s 10.5 and decided to go with this “women” shoes with half a size up at 11 because of the price and I really don’t care about colour gender crap. Anyway these fit perfectly! I’m extremely glad I went with these pairs at a much much lower price than anywhere else plus I like the colour!
I’ve been wearing the adidas boost series for a few years to the gym and the ultraboost series is always my trusty style. They are very comfy. Never gives me blisters even I go hardcore at the gym almost everyday.
Highly recommended. Just buy whatever colour you like at a discounted price.
2 people found this helpful
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