Updates to Under Armour Threadborne Blur

  • The upper is made up of Under Armour’s Threadborne knit material. It is lightweight yet supportive enough to deliver a compression-like fit that makes runners feel more secure while moving. The textile is also breathable, preventing the formation of hot spots and making the foot dry from the inside.
  • The main technology on the midsole is called Micro G. It is a type of foam material that’s 30% thinner than other standard foams. It greatly helps in decreasing the shoe’s weight as it brings a low-to-the-ground ride and responsiveness.
  • The outsole  has both the Carbon Rubber and Blown Rubber placed on certain areas to protect the bottom of the shoe from early signs of wear, as well as provide enough traction. To make these two rubbers more agreeable, Anatomical Flex Grooves were introduced to allow easy bending and flexing.

Size and fit

The Under Armour Threadborne Blur is comes in standard running shoe lengths. Runners will be able to purchase it using their usual length preferences. For the width, it also comes in the standard D – medium and B – medium for men and women respectively.


On the heel area of the outsole is Carbon rubber. The heel is a high-wear zone that needs the most protection which is why this abrasion-resistant and durable material was introduced. Aside from that, the rubber also supplies a good amount of traction on common surfaces, helping the runner propel forward without slipping.

On the forefoot is Blown Rubber. It is a compound which was mixed with air during its manufacturing process, making a rubber that’s lighter and cushier than standard foams. Strategically placed, this material allows the outsole better flexibility and responsiveness.

The tread pattern of the Under Armour Threadborne Blur is composed of wavy, Anatomical Flex Grooves that allow the foot to move freely and naturally.


The midsole of the Under Armour Threadborne Blur has the Micro G foam which is lighter than standard foams in the industry. It helps make the shoe lightweight without sacrificing protection and responsiveness. The cushioning isn’t plush, but the foam offers a feel that’s closer to the ground, allowing runners to have a better feel of the path they are running on. The Micro G foam is also used in other running shoes from Under Armour.

The heel part of the midsole has been deconstructed, sporting a not-so-usual look with its donut-like design. It adds to the aesthetic value of the shoe while aiding in impact dispersion, re-directing the force received by the heel to the rest of the foot. 


The upper is made of a material called Threaborne. It is knitted pieces of thread that provide comfortable compression and support that’s multi-directional. It also eliminates the formation of hot spots during runs as it easily allows air to pass through its gaps, making the shoe well ventilated.

The tongue also aids in making the upper breathable as it is made of mesh material. Other than ventilation, this part of the upper is connected to the footbed by stretchable support wings which helps maintain the snugness throughout the foot.

At the back part, the innovative Speedform construction locks the heel in place. Because it cups the heel, it prevents this part of the foot from moving side to side while the runner is in motion. The stability delivers only minimal, but it does ensure that the fit is snug and precise.

As an extra layer of cushioning, an embedded sock liner was added. Since this platform comes into contact with the foot directly, it aids in delivering sufficient underfoot comfort while acting as a sheet of impact protection.


The current trend of Under Armour Threadborne Blur.
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Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.