Arch support
Daily running
M: 303g | W: 255g
Heel to toe drop
M: 10mm | W: 10mm
Heel height
M: 30mm | W: 30mm
Forefoot height
M: 20mm | W: 20mm
Widths available
M: Normal - D | W: Normal - B
Show moreless facts


Shoes best for road, track and light gravel. See the best road shoes.


Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

Good to know

As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

Neutral / cushion / high arch

Shoes for runners who does not need any additional arch support (Around 50% of runners). Best for people with high or medium high arches. See the best neutral shoes.

Stability / overpronation / normal arch

Shoes for runners who needs arch support (Around 45% of runners). Best for runners with a normal arch. See the best stability shoes.

Motion control / severe overproanation / flat feet

Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

Good to know

- Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
- More about arch support in this video.
- Find your arch type by following steps from this video.

Daily running

Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

Good to know

If you want just one pair of shoes, buy a shoe for daily running.

The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.


We spent 6.4 hours reading reviews from experts and users. In summary, this is what runners think:

7 reasons to buy

  • A lot of runners welcomed the appealing look of the Adidas Ultra Boost Uncaged, which allowed them to use it casually.

  • The majority of reviewers commended its lightweight disposition.

  • Commenters said that the comfortable and long-lasting nature of this running shoe was worth its otherwise expensive price.

  • Many testers used the word ‘comfortable’ to describe their experience wearing this model.

  • The boost™ technology received high praise for its responsive performance and durability.

  • A user commented that the upper was able to wrap around their feet snugly and securely.

  • The overall quality was reliable for a lot of those who tested the Adidas Ultra Boost Uncaged.

4 reasons not to buy

  • A few runners noted that the width of the Adidas Ultra Boost Uncaged was a bit tight.

  • One tester commented that it was a struggle to put on and that it needed a pull-tab to assist them.

  • A reviewer stated that it lacked mid-foot support, which could’ve been helpful for performance running.

  • The garter-like collar tended to irritate the skin after prolonged use, complained a tester.

Bottom line

The Adidas Ultra Boost Uncaged gave comfort and security to a lot of runners. It kept their feet moving without restriction. The cushioning system was greatly appreciated, as well. Many said that this shoe was expensive, but its overall performance and service made it worth its price.

World wide, Ultra Boost Uncaged is in the top 5% most popular running shoes. The brand, Adidas, is the 3rd most popular.

Map: Shows popularity per continent based on 1010 shoes


4.8 / 5 based on 647 ratings

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Expert reviews

Experts are running shoe geeks, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

Are you an expert? Apply to contribute here.

85 / 100 based on 25 expert reviews

  • 92
    SneakerTalkLevel 1 expert
    by SneakerTalk
    Whenever I wear these, I feel like I'm blessing my feet. That is how comfortable these are. When I come home, I don't wanna take these off my feet.
  • 90
    JPEREZLevel 1 expert
    by JPEREZ
    The most comfortable sneaker that I own in my collection.
  • 91
    Wear TestersLevel 3 expert
    by Wear Testers
    If you don't want to spend $180 on a "fashion runner," then don't, but don't let the Ultra Boost Uncaged fool you-it performs as well or better than ANY other shoe out there, provided you acknowledge the support factor.
  • 86
    Hes KicksLevel 3 expert
    by Hes Kicks
    I think they're really comfortable and I like the overall look of these.
  • 88
    Mr StoltzLevel 2 expert
    by Mr Stoltz
    The new Ultra Boost Uncaged is simply epic. It is, by far, one of the most comfortable shoes I've ever worn, and even better than the previous Ultra Boost.
  • 86
    Sport 360˙Level 2 expert
    by Sport 360˙
    The Ultra Boost range already has excellent cushioning that combines comfort and support. The Uncaged range takes the concept further.
  • 86
    Bryan HinkleLevel 2 expert
    by Bryan Hinkle
    If you're a neutral runner with a very strong gait, very neutral run, very easy stride, definitely check this out as a performance shoe.
  • 82
    Runner's WorldLevel 2 expert
    by Runner's World UK
    From a runner’s perspective, the plastic overlays of the ‘cage’ could, on occasion, dig a little into the foot so whatever the trigger, I’m not actually sad to see them go.
  • 70
    Chris ChaseLevel 2 expert
    by Nightwing2303
    The primeknit collar is stretchy and these are extremely hard to get on.
  • 90
    StraitsTimesLevel 1 expert
    by The Straits Times
    The Adidas Ultra Boost Uncaged is the ultimate manifestation of both fashion and function in a pair of running shoes. Price be damned.
  • 89
    Ben IsaacsLevel 1 expert
    by Coach Mag
    That may sound too good to be true but on my first go in the Uncaged I ran my fastest 10K for 18 months and the following day equalled my 10K PB set nearly three years ago. 
  • 88
    Zak KerrLevel 1 expert
    by Zak Kerr
    Just pick one up. This shoe is amazing.
  • 88
    A Sneaker LifeLevel 1 expert
    by A Sneaker Life
    Overall, this shoe, to me personally, is way better than the original Ultra Boost. If you have the opportunity to pick these up, I love them. They are so comfortable.
  • 87
    Allen ClaudiusLevel 1 expert
    by Allen Claudius
    This cushioning on the Boost is bloody amazing like it always is.
  • 87
    RamLevel 1 expert
    by Ram of the Rose
    Combine the boost midsole with the Primeknit upper and what you get is what I call the most comfortable shoes I've every worn.
  • 85
    Allen ClaudiusLevel 1 expert
    by Bowties and Bones
    The Ultra Boost Uncaged retains the boost sole throughout, as in earlier versions. The heel is supported with a cup that is added on the otherwise entirely Primeknitupper. 
  • 85
    NY KicksLevel 1 expert
    by NY Kicks
    It just feels really soft and just really smooth. Great transitioning in this.
  • 85
    TheRealRayRay20Level 1 expert
    by TheRealRayRay20
    They don't have the cage but there is still support.
  • 84
    The JC LifestyleLevel 1 expert
    by The JC Lifestyle
    Boost cushioning. Awesome. My favorite cushioning on the market and the most comfy.
  • 84
    Fowler CustomsLevel 1 expert
    by Fowler Customs
    As for comfort on feet, these shoes don't disappoint. They're definitely, definitely true-to-size.
  • 83
    Pierreson TanLevel 1 expert
    by Pierreson Tan
    The Primeknit upper was made to fit very snug. And if you have a wide foot, I recommend you to go a half-size up.
  • 82
    Alex ZevallosLevel 1 expert
    by Alex Zevallos
    It's very comfortable, far more comfortable than any NMD or anything from a competitor.
  • 81
    Campbell SimpsonLevel 1 expert
    by Gizmodo
    They look pretty damn cool, and even though the original UltraBOOST is still an attractive shoe we can see precisely why sneaker fans were hacking them apart — because the knit underneath looks really damn cool, and comfortable to boot. the original UltraBOOST alongside the new Uncaged.
  • 81
    Fitness on ToastLevel 1 expert
    by Fitness on Toast
    This Uncaged shoe feels [and almost looks] like a sock, into which the foot just gently sinks.
  • 80
    Matt RidoutLevel 1 expert
    by Kingsdown Roots
    As with all boost sneakers these are very comfortable but feature a thicker inner-sole which offers more support.
  • Show moreless reviews
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These are visual presentations, not reviews

Updates to Ultra Boost Uncaged

Endless energy is given to the runner when they put on the Adidas Ultra Boost Uncaged. This running shoe delivers responsive cushioning, which is also lightweight and flexible. A boost of energy makes each step feel enabled, and it’s largely thanks to the springy boost™ full-length foam. The upper coverage looks and feels like a sock, thus permitting freedom of movement.

The outsole unit of this running shoe makes use of a rubber material that is elastic. It adapts to how the foot comes in contact with the ground, thus keeping it balanced and well-supported. It also works with the mid-sole in order to make the heel-to-toe transitions as smooth as possible for the wearer. The outsole isn’t stiff, as well.

The platform of the Adidas Ultra Boost Uncaged uses the high quality boost™ technology. Its springy nature energizes each step, allowing runners to land comfortably on the ground and then lift off with more oomph. It’s made from durable materials, so it won’t easily break down.

The upper unit features the Primeknit system, an engineered material that looks and feels like a woven fabric. It moves along with the foot, expanding as it lands on the ground and flexing as it rears for the toe-off. The SOCKFIT construction reduces irritation, especially when wearing the Adidas Ultra Boost Uncaged without actual socks.

Ultra Boost Uncaged size and fit

The Adidas Ultra Boost Uncaged uses standard measurements for its length. Men and women are able to get the correct size when selecting this model. The available width for both genders is medium, so those with medium sized feet are able to acclimate well to it when wearing it. Its semi-curved shape follows the natural curve of the human foot.


The STRETCHWEB outsole shields the rest of the sole unit from wear and tear. Its elastic nature adapts to the surface, expanding itself to balance out each step the runner takes. It even works alongside the mid-sole to return energy to the runner. This rubber material also delivers reliable surface traction, which is essential for every running session.


The boost™ mid-sole is made up of thousands of TPU pellets that have been molded together. This material is lightweight and responsive. Its springy nature energizes the runner, making each landing well-cushioned and each liftoff more enabled.

Mid-foot integrity is given by the TORSION® SYSTEM. It also allows the rear and the front sections of the foot to move independently, thus causing each step to become smoother and more efficient.


The Primeknit is a material that feels like cloth. It follows the shape and motion of the foot, essentially giving way for natural movement. It’s lightweight and flexible, too.

The SOCKFIT lets the runner feel a snug and secure fit. It works like a sock, wrapping the foot comfortably without causing skin irritation.

The FITFRAME 3D-Molded TPU is placed in the heel area. It stabilizes the heel and keeps it in place, so it basically prevents wobbling of the foot, as well as accidental shoe removals.


Comparison to category means
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