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adidas Ultra Boost 4.0 Performance Review

As we know the set of 5Ks that empowers running communities to combat the extreme amount of marine plastic pollution in today’s world , so the Deep Ocean Blue” Parley Ultra Boost 4.0 was the official shoe which inspired by the deepest part of the world’s oceans –Mariana Trench.  but I just got the black one.And we will test it today .

The shoe’s unique Primeknit upper is offset by a black plastic midfoot cage, and the tongue features black adidas and Parley branding.

Whether  it is as a professional runners shoes or the casual shoes, there are more topics for this running shoe.and a lot of people will buy and test this shoes .

Unlike the Ultra Boost ST which prefers the reinforced the supporting , and it also differs from the Uncaged which only  focusing the Primeknit uppers. The Ultra Boost 4.0 was more profession with  perfect Primeknit uppers together.As for Energy Boost 4, I think it is a bit of out of fashion with  Tech-Fit upper and EVA and Boost midsole.seems theEnergy Boost 4 like a pair of traditional running shoes?


The soft and comfortable Primeknit knitted upper, and the plastic counter also cups under the heel edges,and the famous full length  Boost cushioning. The classic Torsion System midsole and the Strech Web  rubber outsole constitute the entire technology of the Ultra Boost 4.0.

Here’s our take on why the Ultra Boost uses so much plastic on what could have been a lightweight upper with unadulterated stretch. We think that the Boost midsole is inherently unstable once the foam volume crosses a certain threshold, and that is why adidas uses one of the two things – a plastic midfoot and/or a midsole rim.


Perhaps Utra Boost 1.0’s design has been classic one, or the appearance of running shoes has been accepted by consumers, so the  Uta Boost 4.0 is only a slight adjustment on the upper material and the traction, we will check it closely .


The Ultra Boost upper isn’t pure Primeknit, but rather a hybrid which uses elastic-knit in forefoot and midfoot, and a bootie construction in the rear which relies on traditional stretch fabrics.

Midfoot cage attaches to the molded heel clip with an inwards flare. This plastic counter also cups under the heel edges.

While we generally see a flat piece glued flush with the outsole, the footbridge here originates in a midsole cavity.

The side support and the Primeknit uppers are visually more low-key coordinated. Compared to the Utra Boost 3.0 translucent material looks more stable and strong.

There are the BOOST  symbol inside of shoes.

For the traction :just a single latticed sheet clothes the bottom. The exposed windows help reduce weight and increases the ride softness and consistency. and the traction improved the grip and stability compare with last version .

The other side of the compression molded EVA midsole. The last markings indicate a different base fit than other Boost models.The Energy Boost and Glide Boost all are based on different upper fit dimensions

The classic Torsion System is firmly embedded in the midsole of the running shoe, extending from the forefoot to the back.
It can be seen that the HeelCounter heel locking system was extending to the heel ,high-density Boost and Torsion System anti-twist system are all constitutes the running shoes, making the running shoes practical in the short distances.

adidas calls its outsole design ‘Sprintweb’, a single piece of soft rubber with rectangular perforations exposing the Boost midsole.

A white Boost midsole provides contrast and comfort, and the shoe is rounded off with the Ultra Boost’s standard Continental rubber outsole for exceptional durability.

There are more picture on-foot as below ;


Running (5-10km and sprint), but also sports like fitness, or some recreational sports.
I can run from 0 to 2-3 times a week, it depends on the period, but I’ll use it also for some sport and when I’ll walk a lot.

I’m also looking for a shoe which is very comfortable, flexible, responsive, with good transition and and ventilation and beautiful

The most intuitive feeling  is the comfortable fit . Compared to Nike’s Flyknit, Primeknit is more conformable , and excellent stretchability gives better tension to the upper. After solving the problem of previous uppers, the Primeknit upper will maximize .Then it fit with all types of foot.

It can be seen that the full length Boost cushioning effect is obvious, and the shoes will be fact more   impaction when running.

We have to remember that the Ultra Boost is very much a neutral shoe, and the midsole behavior is well within the boundaries of that.  then transition quality which feels great for a shoe this cushioned.

Different Primeknit knitted and different densities of material will bring the different wrapping under different situation. The HeelCounter  locking system also did a great job ,but sometimes it will give more pressure to ankle .


The heel softness is comparable to the Energy Boost 2 , but with one major difference , the midsole of UtrA Boost  is far more responsive.  If you were to look at the midsole heel top down, you will notice that a good portion of the Boost foam sticks outwards, along with the outsole lip.

Here are some gif picture as below :

The Ultra Boost is that the front and rear part of the midsole work together as two separate halves. In the back, a very cushioned ride pampers your heel as explained in the cushioning breakout.

A squashy toe-box and the unwanted pressure from the midfoot cage make a dent in the German brand’s ‘greatest running shoe’ claim.

Overall, I try to test nay angle , the traction is amazing with nice responsive. And the full length Boost ,it  will bring the great bounce and the TPU with the Torsion System also did a great job.



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