Under Armour SpeedForm Slingshot Reviewed
Under Armour‘s footwear team challenged themselves to defy the limits of speed, and they came up with the SpeedForm Slingshot. The upper uses a woven material in asymmetrical compression zones in order to increase power and speed. It also uses Dyneema, “the world’s strongest fiber,” for flexible durability. In the midsole, the Pebax propulsion plate creates explosive launches. The result? The Under Armour SpeedForm Slingshot is a shoe that mimics muscle compression. Also, springs the foot forward like a slingshot and makes fast runners even faster.
- "Burrito tongue" creates a precise, customized, sock-like fit
- Very comfortable to wear
- Midsole design provides great responsiveness
- No break-in period
- Very lightweight, great for speed and performance
- Popular design and color choices
- No wide sizes
- Sizes run small - we recommend ordering a half or full size up
- Some runners reported a lack of support
- Some runners found the material in the toe region wearing out quickly
- Under Armour SpeedForm Slingshots get a lot of praise from buyers for the comfortable fit. The overall design of the upper creates a glove-like fit that holds the foot with a natural feel.
- Most buyers say these shoes are a comfortable choice for running, walking, training, or long days on your feet at work.
- The look and style get a lot of compliments, too. Aside from a few people who were not pleased with the color options or design, buyers generally say the look of the shoe is what first drew them to try them out.
- Overall, these shoes are lightweight without any extra bulk.
- The upper has a simple design without any extra seams or stitching that can create hot spots.
- Around the middle of the foot, the snug design keeps the foot in place.
- Positive reviews of the SpeedForm Slingshot come from both runners and walkers.
- The woven material of the upper is breathable.
- There are several reports of people who machine washed these shoes without any issue.
- A few reviewers with neuropathy say these shoes keep their feet feeling comfortable and pain free.
- The minimalist design gives this shoe a barefoot feel but with a less extreme low drop.
- Compared to some other materials, the woven upper can hide a bit of dirt so they can stay looking cleaner longer.
- Most reviewers say they needed no break in time.
- These shoes are on the more expensive end for runners, but many buyers claim that they are worth the cost.
- The most common complaint is sizing. Most buyers say this design runs small. Checking sizing charts or trying on a pair before buying will save you a lot of hassle and possible pain.
- The tongue design is unique. For some people, it's an improvement from traditional shoe tongue designs. For others, it seems useless or distracting.
- UA products can be pricey. The SpeedForm Slingshot is no exception.
- There are a few reviews from people who claim there isn't adequate heel and ankle support in this design.
- If you like runners with plentiful sole cushion, this is not the shoe for you. The minimal cushioning has led to sore feet for some people.
- Several buyers have issues with the laces coming untied or loose easily while running.
- There are some reports of excessive wear on the upper, especially in the toe area, after just a few weeks.
Its anatomical design gives a natural fit and greater responsiveness for better performance. It is thick enough to be durable, but also thinner than some other shoes because it was designed to be as light as possible for speed.
It is about 30% thinner than other foams, resulting in a lighter weight and the foot is closer to the ground. The TPU Pebax propulsion plate adds support and stability. The top layer is Charged Cushioning, which makes adds comfortable cushioning for soft landings.
There are three different zones of compression: the tight and springy lateral, tightest compression on the medial arch area, and a loose compression on the forefoot. This allows the toes to move around while maintaining a snug fit around the foot. The heel cup stabilizes the foot, the woven pattern allows the foot to breathe, and the overall design acts like a slingshot, maximizing speed and responsiveness.
The outsole's rubber placement was designed to make the shoe lighter. The midsole weighs about half of what traditional midsoles weigh. The woven upper was also designed to be sturdy yet lightweight. SpeedForm technology and compression work together to make the shoe as light as possible without compromising on quality, fit or comfort.
Most reviewers really liked the lightweight, saying it made running easier, but a few thought the shoe was too light to be stable enough for long runs.
Reviewers had mixed opinions on breathability. Some of them felt that the shoe offered a good amount of breathability for everyday runs, while others stated that the shoe was not as breathable as they would have liked it to be, especially in hot weather, potentially resulting in problems such as overheating or blisters. The Dyneema fabric makes the upper stronger, but it seems to not be quite as breathable as other materials.
The tongue is also padded for increased comfort and fit. The shoe's overall low weight also makes the shoe more comfortable because it allows lots of movement is not bulky to carry when running. The only non-comfortable trait was that the upper wasn't as breathable as some testers would have liked, resulting in hot spots.
Many reviewers complimented how comfortable the shoe is, with several purchasing multiple pairs in different colors.
Men have nine color choices: black/aluminum, steel/white/black, rocket red/white/black, flashlight/black, green, hyper green, systematic/cardinal, blue, and meridian blue.
Women have five choices available to them: limelight/Tahitian teal/peacock, London orange/sirens coal, pink chrome, crystal, and steel.
The colors are so well-liked that many reviewers stated they ordered pairs in multiple colors, and some even requested more colors so that they could purchase more shoes!
Many reviewers reported great protection with the SpeedForm Slingshot. Some runners who normally have knee pain, shin splints, cramping, ankle rubbing, and other problems did not experience those problems with this shoe.
The outsole's flexible treads allow users to run comfortably on roads, and the anatomical fit improves performance.
The midsole uses Micro G foam for explosive takeoffs and Charged Cushioning for smooth landings. The Pebax propulsion plate between those layers acts as a launching pad, supporting and stabilizing the takeoffs and landings.
The upper uses seamless asymmetric zonal compression around the foot and flexible material to act like a slingshot, making movement faster and easier.
The low weight also makes the shoe easier to move in, and the low drop allows the foot to move more naturally.
The Under Armour footwear team specifically designed the shoe to make fast runners faster, which means excellent responsiveness.
The upper has a heel cup to keep the heel in place and uses a “burrito tongue” construction for a sock-like fit. The upper also uses three levels of compression: tightest compression on the medial arch area, the tight and springy lateral, and loose compression on the forefoot. This supports the ankle and lateral areas of the foot while allowing the toes to move for takeoffs.
The level of arch support was rated as neutral, meaning good for many runners, but runners who require additional support may need to use an arch support or insole. Being a neutral shoe, it also was not designed for over-pronators. Many testers found the shoe to be supportive, although some thought the upper was too flexible for side to side movements.
Because of its lightweight, some sites categorize the SpeedForm Slingshot under competition, for things such as short races around tracks, although some reviewers commented that the shoe lacks the required stability for long races. Many testers stated that the shoe was fast and reliable for their daily road runs.
The outsole rubber lifts the foot off the ground, using an anatomical design for a natural fit that holds the foot in place.
The Pebax propulsion plate in the midsole supports and stabilizes the foot during takeoffs and landings. The upper uses a burrito tongue to wrap and guide the foot, and asymmetric zonal compression to give the most stability to arches, then to the lateral, and then loose compression around the toes to allow them to move enough to spring during takeoffs.
The laces and heel cup also stabilize the foot, although a few testers experienced some heel slippage.
Many testers liked the stability level of the shoe, while others thought it did not offer enough stability for side to side movements, long races, or over-pronators.
- UA SpeedForm technology
- Anatomical outsole
- Charged Cushioning and Micro G in midsole
- Pebax propulsion plate
- Seamless asymmetric zonal compression
- 3D knit upper made of Dyneema
- "Burrito tongue"
Its upper fits lock a sock, the midsole uses comfortable cushioning, and the outsole has an anatomical sole giving a natural fit and better performance. The Under Armour SpeedForm Slingshot is also incredibly responsive, with the midsole giving great takeoffs and landings and the upper acting like a slingshot, making runners quicker than ever before.
Possible areas for improvement include a lower price, more stability in the heel to eliminate slippage, more stability and support in the upper for lateral moves and over-pronators, a more durable upper material around the toes, and bigger or wider sizes. In short, the Under Armour footwear team succeeded in their challenge to defy the limits of speed and created a light, fast road running shoe.