Adidas Ultraboost 21 Review

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Adidas is one of the most popular brands for running shoes. They are one of the best-known manufacturers in this category. Their shoes are specially designed to enhance athletic performance.

They are also good for everyday use. Adidas Ultraboost 21 continues its tradition of helping to make one of the best sneakers for track and field athletes.

In this Adidas Ultraboost 21 Review, we’ll tell you about the in-depth features of these amazing running shoes so stay with us.

Adidas Ultraboost 21 Review: Introduction

Adidas Ultraboost 21 Review
Adidas Ultraboost 21 Review

The Adidas Ultraboost series is a famous shoe of Adidas. In 2015, Adidas launched the first Ultraboost shoe that time shoe was the best shoe available in the market. And now the year 2021, Adidas launched a redesigned version of Ultraboost named Adidas Ultraboost 21. The Ultraboost 20 was very responsive and flexible. Because of the high comfort level, people started wearing these shoes as casual shoes.

The Adidas Ultraboost 21 is the new shoe redesigned from the beginning in which it has a new sole that contains Continental rubber outsole and the midsole with enhanced boost. It has a knit upper made of material named Primeknit+ and is more weighted than the previous version of the Ultraboost.

Adidas Ultraboost 21 Review

First Impression

The First Impression of the Ultraboost was when we saw its first picture of the shoes think of its extra boost in the heel which, made us feel excited to wear it. It has a different design of midsole and outsole. It feels like it is heavier than older versions.

It makes a loud sound when you run by wearing them because of its Continental rubber outsole. It has a smooth run because of its heel and different outsole shape. By the Adidas Ultraboost 21 review, The Ultraboost is more like a daily lifestyle shoe by its performance.


The midsole of the shoe has an extra boost just like it named. A torsion plastic shank is used to make the Boost foam. The Boost of the Adidas Ultraboost 21 midsole is 6% more than the previous shoe. The Boost is present at the rear foot of the shoe.

The shoe is more responsive and flexible. It seems like a big boost foam is present in the heel, but when you wear you will realize that it has raised the Boost on the rare areas. It gives a cupping feeling on the heel which, increases the stability of the shoe. The midsole of the shoe is wide which, makes minimal muscular inclination.

Related: Saucony Ride 13 Review


The outsole of the Adidas Ultraboost 21 running shoes is the new version of the shoe made of continental rubber. The Continental rubber makes the feel of the ride is more durable, firm, and smoother.

The outsole of Ultraboost has soft rubber under the ball of the foot to make a smooth landing. According to the Adidas Ultraboost 21 review, it has a flat outsole but, the Ultraboost 20 has a raised pillar design.


The upper of the Ultraboost 21 is a shoe made of stretchy Primeknit mesh with sock-like construction. The upper of the shoe feels very soft, smooth and, comfortable during running.

The material used to make the upper of the shoe has 1.9mm thickness, 50% textile is present in which 75% textile is Primeblue. The upper unit of the shoe gives a secure feeling because it has a stretchy, sock-like, and padded collar that wraps around the foot very softly. The breathability level of the shoe upper is average because of the upper flush around the foot.

Related: New Balance Fresh Foam 1080v10 Review


The Ultraboost 21 shoe has a firm foothold that fits very smoothly. The series of Ultraboost had no change in shallow toe-box and sung forefoot fit since the beginning.

Due to the shallow toe area, the size of the shoe feels a bit short but, it has an exact fit of the shoe. The width of the shoe has no options due to its snug fit. The fit of the shoe is very comfortable for a long ride.


The ride of the Ultraboost 21 is firm, comfortable, smooth, and high level of stability. The stability level of the shoe is the most liked thing in the review of the Ultraboost 21 because it helps to take a good long run.

The shoe has a firm ride due to its outsole which, contains a Continental rubber. The upper unit of the shoe is also smooth, and its sock-like construction makes the ride more comfortable.

The stack of the shoe is 30.5mm with a stable heel just due to its cupping action of the midsole. By replacing the outsole from a raised pillar design with a flat in the new version of 2021 makes the shoe a fast shoe for a run compared to the older version.

Related: Saucony Kinvara 11 Review

Weight & Drop

The Adidas Men’s Ultraboost 21 running shoes contain a weight of 340 grams or 12 ounces. The Adidas Women’s Ultraboost 21 running shoes have 312 grams or 11 ounces of weight. This shoe is for surface-like roads and, the drop of the shoe is 10mm.

Adidas Ultraboost 21 Running Shoe Review: Pros & Cons

  • It has a sock-like fit of the shoe
  • The outsole of the shoe has durability
  • A smooth and stable ride
  • The grip of the shoe around the foot is fantastic
  • The design of the shoe is modern and attractive
  • The lockdown on the midfoot is great
  • The weight of the shoe increased
  • No breathability of the shoe
  • The lockdown on the heel get looses
  • The price of the shoe is high
  • It has an old lacing style

Conclusion of Review of Adidas Ultraboost 21

The Adidas Ultraboost 21 has many upgrades in it. It has an outsole which, is more durable, firm, and comfortable. The midsole of the shoe has a bounce. It has a stretchy, soft, and knitted upper. Its stable ride is the most liked thing which, can have many kilometers of running. The price of the shoe is $70 – $370 which, is expensive.