Verdict from 13 experts and +100 user reviews

8 reasons to buy

  • There were runners who thought that the Under Armour SpeedForm Gemini 3 was pleasantly lightweight for their feet.
  • A tester reported that the upper unit was able to mold naturally to the shape of the foot, resulting in a glove-like coverage.
  • The fabrics easily allowed air to enter the shoe and keep the foot cool and dry, stated a number of consumers.
  • The contemporary design and aesthetics of this shoe received positive remarks.
  • A runner regaled that he didn’t need to break in the shoe; it felt comfortable and responsive from the first use.
  • Many shoe enthusiasts lauded the cushioning system of the Gemini 3, stating that it felt efficient and capable.
  • A majority of those who have tried this shoe were happy with its general performance on the roads.
  • This shoe was efficient as a running shoe and as a casual option, a number of purchasers wrote.

4 reasons not to buy

  • The back of the upper unit felt rough and it tended to rub uncomfortably against the skin, some testers observed.
  • The front portion of the shoe felt a bit tight, according to several consumers.
  • Some runners complained that the underfoot platform seemed a bit stiffer than the previous iterations.
  • A few people weren’t enthusiastic about the looks of the Gemini 3; they stated that the previous versions looked more pleasing.

Bottom line

Many runners were able to appreciate what the Under Armour SpeedForm Gemini 3 had to offer. To them, this neutral road running shoe was efficient and agreeable for their feet. They felt that the components just worked in a cohesive way. But there were those who had some gripes about it, noting some missteps and missed opportunities that would’ve elevated it from the shadow of the Gemini 2 and the original Gemini.

Tip: see the best running shoes.

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Good to know

  • The Under Armour SpeedForm Gemini 3 is a road running shoe that’s made for runners who have neutral pronation. It features Engineered Mesh on the upper, which is a departure from the traditional mesh construction in the previous iterations of the Gemini. A mid-foot panel made from high-strength fibers helps in securing the foot and providing a snug wrap.
  • The mid-sole is comprised of two proprietary technologies that have graced many Under Armour shoes. They work together in order to provide responsible cushioning and protection from impact shock. One of these systems has a springy disposition, which allows the foot to lift off the ground in a more responsive way. The included sock liner molds to the shape of the underfoot, giving it some support.
  • Two rubber compounds are used for the outsole unit of the Under Armour SpeedForm Gemini 3. Both of them are durable and long-lasting, but the one placed in the forefoot section is much more responsive. It actually adds a bit more cushioning, while also keeping the platform as flexible as possible.

Regular measurements were used in the making of the Under Armour SpeedForm Gemini 3. The sizing schemes follow the preferences of runners. The available width for both the men and women’s versions is medium. It welcomes those who have medium sized feet. The semi-curved shape of this shoe mimics the natural curve of the human foot.


Blown rubber is a lightweight yet responsive material. Placed in the forefoot area of the Under Armour SpeedForm Gemini 3, it provides traction while also adding a bit more cushioning and flexibility for the foot.

High-abrasion rubber is placed in the heel section. This durable compound handles impact shock and makes sure to preserve the structure of the mid-sole unit. It doesn’t peel off or wear out easily.

Flex grooves make the front section of the platform more adherent to the natural movement of the wearer’s foot.


The Charged Foam is a full-length foam unit that cushions the foot throughout the running session. It responds well to the movements of the foot, and it gives protection from impact during the landing phase.

The Micro G Cushioning is placed in the heel section. It absorbs the impact forces during the foot-strike and bounces forward for a springy transition towards the toe-off. This Under Armour midsole foam is also used in the Assert 7 and other Under Armour running shoes.

An Embedded Sock Liner follows the shape of the underfoot, giving support and cushioning to the arch, which isn’t usually given attention when it comes to neutral shoes.


Engineered mesh is used in the upper unit of the Under Armour SpeedForm Gemini 3. It covers the foot securely and provides a breathable coverage. It welcomes environmental air easily into the foot-chamber, keeping a cool and dry environment for the runner at all times.

The SpeedForm construction essentially allows the upper unit to conform nicely to the shape of the wearer’s foot, giving a glove-like fit that’s free from distractions.

The Threadbone Midfoot Support Panel is essentially a fabric overlay that helps the rest of the upper when it comes to delivering a secure wrap. It works with the lacing system in keeping the fit snug or loose, depending on the preference of the runner.

A seamless heel counter has been added internally. This lightweight material supports the rear part of the foot and prevents it from exiting the shoe unintentionally. It’s not bulky, as well.

How SpeedForm Gemini 3 compares

This shoe: 87
All shoes average: 82
56 95
This shoe: £130
All shoes average: £120
£40 £280
This shoe: 279g
All shoes average: 269g
79g 437g
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Author
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.

jens@runrepeat.com