Verdict from 100+ user reviews

8 reasons to buy

  • A significant number of users mentioned that the Under Armour SpeedForm Slingshot 2 is very comfortable.
  • Some purchasers admired the lightweight design of the SlingShot 2.
  • The shoe fits well and requires no break-in time, said some wearers.
  • A few others happily expressed that they have been using the shoe not just for running, but also for walking and gym workout sessions.
  • Several users said that the mesh upper was sufficiently breathable.
  • According to some runners, the SpeedForm Slingshot 2 has a good-looking design.
  • One user is delighted with the shoe’s wide toe box.
  • Several testers thought that the laces of the shoe are odd, but it provides better fit and support.

2 reasons not to buy

  • The material used for the upper unit was considered by a few people to be rough and abrasive.
  • A consumer lamented the flimsy lateral support given by the knit upper and the asymmetrical lacing system.

Bottom line

The second version of the SpeedForm Slingshot is a lightweight running shoe packed with top-notch Under Armour technologies. It gained positive reviews from various users and had continued to wow runners with its functionality, design, and comfort. On the other hand, there were complaints about the upper unit, with some considering the fabrics to be irritating and one treating the fit system to be unreliable.

Tip: see the best running shoes.

Good to know

  • The Under Armour SpeedForm Slingshot 2 has been modified from the upper to the outer sole. In the upper is the new Threadborne™ knit material that offers breathability. It is also flexible enough to adapt to the natural shape of the foot.
  • For this 2nd iteration, Under Armour gives up the Micro G® foam, but retains the Charged Cushioning®. Instead of the Micro G® foam, a lightweight EVA foam has been used.
  • The SpeedForm Slingshot 2 now has a translucent outsole with high-abrasion resistant rubber which continues to provide runners the much-needed traction, durability, and flexibility.

The Under Armour SpeedForm Slingshot 2 feels true to size. The knit upper and burrito tongue provides enhanced fit without compromising comfort. It has a medium fit in the heel and forefoot area, and the toe box is spacious enough for the toes to move without any restrictions. Both the men’s and women’s version of the shoe are available in medium width.

The Slingshot 2 features a translucent outsole with high-abrasion rubber for durability. The outsole is designed to deliver a good amount of traction for a wide variety of paved surfaces. The outer sole is also made to give added flexibility.

In the midsole is the Charged Cushioning, which is known for its flexibility and responsiveness. Along with it is the EVA midsole foam which is very lightweight and soft as well. The combination of the two materials provides runners better performance on the road. Both the Charged Cushioning and the EVA foam offer long-lasting underfoot protection.

A TPU plate is also placed in the midsole for a quicker toe-off and smoother heel-to-toe transition.

Featured in the upper of the Under Armour SpeedForm Slingshot 2 is the Threadborne™ knit material which is specifically designed to provide better foot wrap without compromising breathability. The knit upper is stretchable and adapts to the shape of the foot for comfortable coverage. There are also enough perforations on the toe box and tongue for enhanced breathability.

The shoe has a sock-like "burrito tongue" which is designed to provide the foot a closer fit. It also comes with an adjustable wide-set lacing system the further secures the foot comfortably.

Lastly, the SpeedForm Slingshot 2 has an external heel counter, which offers better foot lock down all throughout the run.


How Under Armour SpeedForm Slingshot 2 ranks compared to all other shoes
Bottom 19% road running shoes
All road running shoes
Bottom 22% Under Armour running shoes
All Under Armour running shoes
Bottom 19% neutral running shoes
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The current trend of Under Armour SpeedForm Slingshot 2.
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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.