Verdict from 1 expert and 100+ user reviews

6 reasons to buy

  • Almost all of the owners described the Altra HIIT XT 1.5 as very comfortable for workouts and daily use.
  • The durability of the trainer was lauded by many CrossFit aficionados.
  • A good number of workout enthusiasts felt that the sole unit was stable during high-intensity movements.
  • The roomy toe box was appreciated by numerous people; they felt planted while lifting heavy because they could spread their toes.
  • Plenty of folks liked the lightweight nature of the footwear.
  • The outsole was commended by multiple individuals because it was grippy on various surfaces.

4 reasons not to buy

  • A significant number of shoppers complained about the tight midfoot and narrow toe box of the Altra HIIT XT 1.5.
  • The low-profile sole unit felt stiff and uncomfortable, said a minority of critics.
  • The toe box creased and irritated the toes, complained some wearers.
  • A few testers noted that the arch support did not align under the arches and caused discomfort under the heel.

Bottom line

The Altra HIIT XT 1.5 exceeded the expectations of consumers when it came to comfort. It was considered suitable for high-intensity training. Buyers lauded it as a durable pair of CrossFit shoes. On the downside, the trainer felt too tight. The sole unit was also too rigid for some purchasers. But in the end, it came highly recommended by CrossFit practitioners.

Tip: see the best crossfit training shoes.

Good to know

  • The Altra HIIT XT 1.5 is an update to the brand’s first cross-training shoe ever. At first glance, the trainer does not seem to introduce any changes, except for the new range of color options. It is still designed as a versatile CrossFit shoe with a wide platform and a 0-mm heel-to-toe differential.
  • The shoe is claimed to have an improved upper design for a more pleasant in-shoe experience. Also, the fit of the women’s model has been altered to provide a more precise fit.
  • The trainer sports the same materials for the midsole and outsole units. But, according to the brand, the midsole unit of the new iteration has been made softer and more flexible.

The Altra HIIT XT 1.5 comes in both men’s and women’s sizes. Widthwise, the trainer is offered in a standard D - Medium for men and in a B - Medium for women. However, the brand’s FootShape design implies a wide toe box which provides sufficient space for the toes to splay naturally. The shoe is still meant to fit snug in the heel and the midfoot.

The bottom of the shoe is wrapped in a rubber outsole which renders both protection and grip. Its lug pattern and a slip-resistant nature ensure grip on all sorts of gym surfaces. The rubber is also described as non-marking which implies that it doesn’t leave any scuffs or marks on the floor.

The side portions of the outsole protrude up to create walls on the lateral and medial sides. They deliver grip and protection during rope climbs and contribute to the foot stability during side-to-side movements.

The Dual Layer EVA foam makes up the base platform of the HIIT XT 1.5. It is a sturdy, full-length compound which protects the foot from the impact associated with intensive workouts. At the same time, it is made to be firm enough to ensure stability during weightlifting exercises.

The removable PowerSole insert is an additional cushioning component. When the unit is inside, it enhances shock absorption and energy return needed for jumping and running. Removing the insole decreases the stack height of the platform from 24 mm to 18 mm. It creates a more grounded underfoot experience and boosts stability for weight training.

The Altra HIIT XT 1.5 uses the brand’s proprietary FootShape design in the construction of its upper. It features a noticeably wide toe box which provides ample space for the toes to spread inside the footwear. That way, the big toe remains in a straight position, allowing for an efficient toe-off during running and plyometrics.

The primary material used in the upper is a quick-dry air mesh. As the name suggests, it helps in wicking the sweat away from the interiors, keeping the foot fresh. The polyurethane overlays are placed in the areas that need support and protection against the wear-and-tear.

The generously padded heel collar and tongue ensure that the foot stays securely locked in. The fit can be adjusted with the help of the lace-up closure on the instep.

Inside, the shoe has a soft lining which delivers a smooth and irritation-free experience. The stitch-n-turn stitching at the bottom allows the footwear to be worn without an insole.


How Altra HIIT XT 1.5 ranks compared to all other shoes
Bottom 2% crossfit training shoes
All crossfit training shoes
Bottom 1% Altra training shoes
All Altra training shoes
Bottom 12% cross-training training shoes
All cross-training training shoes


The current trend of Altra HIIT XT 1.5.
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Nicholas Rizzo
Nicholas Rizzo

Nick combines 10+ years of experience in the health and fitness industry and a background in the sciences in his role as the Fitness Research Director. During his competitive powerlifting years his PRs have him sitting in the top 2% of bench presses (395 lbs), top 3% of squats (485 lbs) and top 6% of deadlifts (515 lbs) for his weight and age. His work has been featured on, LiveStrong, Healthline, WebMD, WashingtonPost, and many more. Along the way, collaborating with industry leaders like Michael Yessis, Mark Rippetoe, Carlo Buzzichelli, Dave Tate, Ray Williams, and Joel Seedman.