Skip to content
Home » Cross Training Shoes

Under Armour TriBase Reign 6 Performance Review

That Fit Friend is supported by its readers. I [Jake Boly] run this site myself and buy the gear I review. If you purchase through my site, I may earn commissions on sales, read more here!

Under Armour TriBase Reign 6 Review

I’ve always enjoyed the Under Armour TriBase Reign training shoe series, but it always felt like the shoes were “almost there”. The Reign shoes are great for lifting and CrossFit, yet their popularity has remained relatively stagnant.

I think a lot of this is due to two things. First, Under Armour doesn’t seem to market the Reign shoe line that much. I’m optimistic they’ll bring more awareness to the Under Armour TriBase Reign 6 because it’s a solid shoe.

Second, the shoes have never really had a standout feel to them. For example, when you buy a Nike Metcon or NOBULL Trainer, you know exactly what you’re getting and the UA Reign models have lacked this, in my opinion.

Now in its sixth iteration, the UA TriBase Reign 6 has brought its cross-training shoe A-game to the table. This shoe has been fun to review and train in and that’s for multiple reasons I’ll discuss below.

Show Me the Pros & Cons



  • The drop-in midsole has given this shoe a much more flexible feeling compared to the thicker Micro G Foam midsoles used in the last five models. If you're feeling spicy, swap the drop-in midsole out for a thinner insole for a super minimal feel.
  • This shoe's upper feels more "athletic" on the foot because it hugs the foot well and feels seamless after the first wear. The internal heel counter helps contribute to the security that you get with this shoe, too.
  • The outsole's tread is awesome and does a phenomenal job of gripping different surfaces. This shoe has been fun to use on turf, rubber gym floors, and wooden platforms. You shouldn't have slip issues in this model.


  • While I like the drop-in midsole, I'd be remiss to not disclose that drop-in midsoles are an acquired taste. For example, if you don't love models like the PUMA Fuse and Nike Zoom Metcon Turbo 2 then you may not like the Reign 6.
  • If you have high-volume feet and you don't want to swap out the drop-in midsole then you may find that this shoe's fit feels snug on your foot. Thick feet be warned, this shoe may feel snug out of the box.
  • For hybrid workouts, this shoe works for runs under 800 meters but it's not going to be your best bet for tackling workouts where you're running over a mile in a single bout.

My UA TriBase Reign 6 Summary

Similar to its five predecessors, the UA TriBase Reign 6 is a cross-training shoe built for lifting, versatile training, and CrossFit. This model has received multiple upgrades and updates compared to the TriBase Reign 5.

For example, this shoe now features a drop-in midsole, giving it a much more flexible feeling when training. This has been great for sessions where I was performing HIIT, plyometrics, and multi-directional exercises.

The reworked upper of this model has given it a more seamless and “athletic” fit which has been great for expediting the break-in process with this shoe compared to the clunkier feel of the five prior models.

Reign 6 Construction Specs to Know

  • Heel-to-Toe Drop: 2mm
  • Weight: 14.25 oz (size 10 model)
  • Stack Height: TBD
  • Removable Insole: Drop-In Midsole
  • Width: Regular/Medium
  • Sizing: True to size
  • Comparable To Haze Trainer: Read My Review

UA TriBase Reign 6


UA TriBase Reign 6 Product Image

Best For

  • Strength Training
  • Athletic Workouts
  • Cross-Training and HIIT
  • CrossFit
  • Sprints and Ploymetrics

Falls Short

  • For Exceptionally Wide Feet (<EE-width)
  • For Runs Over a Mile

Testing the Under Armour TriBase Reign 6 for Deadlifts

Performance Assessment

Testing the UA TriBase Reign 6 for Lifting and CrossFit

In the context of lifting, the UA TriBase Reign 6 has performed exceptionally well. If you’re buying these for recreational strength sessions then you’ll enjoy the stability that you get from them even though the drop-in midsole runs a little plusher.

Thus far some of my max lifting tests in this shoe include a deadlift set with 405 lbs for 11 reps and a Hatfield squat triple at 415 lbs and I didn’t have any glaring issues with this shoe’s drop-in midsole giving out or compressing.

I think if you’re squatting 400+ lbs you will notice the drop-in midsole a bit — especially through the heel — but not to a point that will hinder your performance, in my opinion.

Under Armour TriBase Reign 6 Stability Testing

The TriBase Reign 6 has been solid for dumbbell split squats and lunges and machine work. Its increased flexibility is great for foot articulation, and its outsole has a nice grip for single-leg and machine exercises.

When it comes to CrossFit, I see the TriBase Reign 6 as a very viable top CrossFit shoe in 2024. This model’s reinforced sidewalls and layered mesh upper give this shoe more rigidity and protection against the abrasion you’ll run into in most WODs.

On top of this, I like that this shoe’s drop-in midsole feels bouncy and comfortable enough for high-volume box jumps and double-unders while being stable enough for heavy WODs with clean & jerks, squats, and deadlifts.

Using the TriBase Reign 6 for Split Squats

Testing the UA TriBase Reign 6 for Versatile Training

I’ve thoroughly enjoyed the TriBase Reign 6 for my athletic sessions, which involve HIIT, plyometrics, and multi-directional exercises. This shoe’s more flexible feel and grippy outsole are stay players in this performance vertical.

When doing broad jumps and sled work on turf, I never ran into slip issues in this shoe and I like that the forefoot’s tread is a lot more aggressive than the TriBase Reign 5’s smoother outsole.

Testing the TriBase Reign 6 for HIIT

The reinforced upper has also done a great job at locking my foot down when doing lateral work. For example, I paired a Cossack squat with a skater stride in one workout and I didn’t have any glaring spillover issues in this shoe.

The heel counter in this model feels soft and doesn’t rub a ton on the ankle which I also enjoyed for my versatile training sessions. If you notice that the heel tab rubs, then you should be able to cut that off without messing up the shoe, too.

Testing the Under Armour TriBase Reign 6 for Sled Workouts

I think my only concern with this shoe for versatile training revolves around its volume for thick feet. For this type of foot anatomy, you may find that the toe box feels a little too low-profile especially when doing forward explosive exercises like broad jumps.

Testing the UA TriBase Reign 6 for Short Runs and Walking

While the UA TriBase Reign 6 is more comfortable for running compared to the TriBase Reign 5, it’s still not going to be your training shoe for pure hybrid workouts where you’re running and lifting.

To add context here, for sprints and short interval runs, the TriBase Reign 6 has been fine. I hit a few workouts where I had fast 400 and 800-meter runs programmed in on a curved treadmill and this shoe felt fine — comfort-wise.

Testing the TriBase Reign 6 for Running

The drop-in midsole is a lot more forgiving compared to the Micro G Foam in the 5 and this is why I also like the Reign 6 comparatively speaking for WODs where you’re running throughout. For runs over 1 mile, you may find this shoe uncomfortable.

For walking and daily wear, the TriBase Reign 6 can be an okay shoe. Is it going to be the most comfortable model if you’re on your feet all day or doing long walks? Not necessarily, but it’s better than models like the Metcon 9 and Adidas Dropset Trainer 2.

Something I’ve been playing with in the Reign 6 is swapping out its drop-in midsole for thinner insoles from models like my Haze Trainer and Reign 5. This has been cool because you get an even more minimalist feel with this shoe.

TriBase Reign 6 Flexibility Test

If you’re transitioning from traditional shoes to barefoot shoes and you want a trainer that has a highly minimalist feel then you may want to try this out. It’s been a fun experiment and something unique that I’ve enjoyed with the Reign 6.

TriBase Reign 6 Performance Overview

  • For lifting, this shoe has been stellar due to its flexibility and stability.
  • If you like “athletic-feeling” shoes then you’ll enjoy this model’s performance for cross-training.
  • Mark my words, the Reign 6 is going to be a strong contender against some of the market’s top CrossFit shoes in 2024.
  • For sprints and short interval runs, the Reign 6 works well, but you’ll want to pass on them for longer runs.

The Under Armour TriBase Reign 6 has delivered a dynamic performance in the gym. This model feels athletic for cross-training and CrossFit while delivering a good level of stability for heavy training.

TriBase Reign 6 Sizing

  • TriBase Reign 6 Sizing Thoughts: True to size for most.

The Under Armour TriBase Reign 6 should fit true to size for most foot anatomies. For example, if you have narrow, regular/medium, and even slightly wider feet then you’ll be fine going TTS in this model.

If you currently wear Under Armour training shoes then I’d stay with the same size in the Reign 6. For context, this shoe fits similarly to other training shoes like the Dropset Trainer 2, Metcon 9, and Inov-8 F-Lite G 300.

TriBase Reign 6 Try On

My One Sizing Concern…

This model’s upper feels a little more snug compared to the Reign 5’s spacious WARP upper, but I don’t think that will be a major issue for most. Plus, you can remove the drop-in midsole to get more volume out of this shoe if you’re okay with a minimalist feel.

Outside of its upper volume, this shoe may lack in the toe box for EE-width feet and wider. If you have notably wide feet, I’d buy these with the thought in mind that you may have to return them so keep them in good condition.

TriBase Reign 6 Width Assessment

If you have additional sizing and fit questions about the TriBase Reign 6, drop a comment below and let me know what shoe you currently wear and in what size.

Construction Breakdown


The Reign 6 features TriBase tech throughout its outsole, but this shoe’s TB tech has been reworked. The TriBase triangle in this shoe is a TPU and it sits right in the middle of the model.

This doesn’t seem to hinder grip or articulation which is nice and if you like a more balanced midfoot then you’ll likely resonate with this change.

TriBase Reign 6 Outsole

The forefoot, midfoot, and heel all have a deep grooved tread. This has proven to be solid for grip, and thus far, it appears to be more durable than prior Reign outsole treads.


This shoe does not feature a separate midsole layer, instead, it comes with a drop-in midsole. This means that the insole is thicker and is used as the midsole in this model.

TriBase Reign 6 Midsole

The heel of the drop-in midsole is a little denser compared to the midfoot and forefoot. I found this to give this shoe a nice blend of responsiveness with forefoot work and stability for lifting.


The medial forefoot of this model features Under Armour’s WARP material, and the lateral side is built with chainlink mesh. I like this blend of materials, and it gives this shoe a secure and durable feeling.

The midfoot and heel have overlays, and the heel has a separate internal heel counter, which has done a good job of promoting security and general comfort when breaking this shoe in.

TriBase Reign 6 Upper

To date, this has been my favorite upper used in the Reign shoes. It feels of a higher quality compared to the first five shoes and its durability seems to have received a lift — but time will tell there!

Who Should Buy the TriBase Reign 6?

  • If you’re an Under Armour fan and want a shoe for lifting and CrossFit, you’ll love how the Reign 6 performs in the gym.
  • If you like flatter-feeling shoes then the Reign 6 can be a good option to explore. This shoe’s 2mm heel-to-toe drop puts them on the lower end of drops for modern training shoes.
  • With the ability to remove the drop-in midsole in this shoe, you can use it as a transitional shoe to barefoot shoes. While it’s not built for this, it’s a nice perk I’ve found with this shoe.

TriBase Reign 6 Midfoot Wrap

Who Shouldn’t Buy the TriBase Reign 6?

  • If you don’t typically resonate with shoes with drop-in midsoles then I’d save your money and explore different models. This drop-in midsole squeaks less than some of its peers, but it’s still a drop-in midsole.
  • If you want a more casual training shoe for walking and running and you’re not super worried about stability and durability then you may want to explore more responsive training shoes.

TriBase Reign 6 On Feet

Final Verdict

The UA TriBase Reign 6 has come out swinging and it’s quickly becoming one of my favorite training shoes in 2024. This model’s updates feel strategic and well-curated giving it a much more versatile feeling.

For lifting, this shoe has delivered a strong level of stability even when deadlifting and squatting over 400 lbs. For athletic sessions, this model’s articulation and security have been stellar.

If you have additional questions about this shoe before you invest, please don’t hesitate to reach out and drop a comment below!

Jake Boly, CSCS, MS Sports Science

Jake Boly, CSCS, MS Sports Science

Jake Boly is the Founder and Editor-In-Chief of That Fit Friend. He's often regarded to as a go-to resource in various performance shoe communities. He’s been formally reviewing shoes and training gear for over 7 years and has hand-tested over 400 pairs of shoes. Jake is known on the internet and YouTube for blending his review process with his educational, strength sports, and personal training background.

Jake has a Masters in Sports Science, a Bachelors in Exercise Science, a CSCS, and he's been personal training for over 10 years helping hundreds of clients get stronger, lose weight, and accomplish their goals. He uses his exercise science brain and personal training background to make curated and thoughtful review content on the fitness gear he's testing.

16 thoughts on “Under Armour TriBase Reign 6 Performance Review”

  1. Love the turn under Armour has taken with these shoe. Lower drop, decent cushion. They fill that any workout vibe that honestly is a throwback to nano 2-6, early metcons, and other shoes in the space

  2. Hi Jake,

    How is the sizing and fit of Reign 6 compared to Nano X3? I have a pair of Nano X3’s in size 11 and they feel comfortable without beeing snug. Can I go true to size on Reign 6 or should I order half size up?

  3. I was wondering I need new shoes both for lifting and some crossfit. I have wide feet and I find some shoes really bother the middle of my foot. I have been going with the nobulls but I will have to switch to something else because I’m finding they are becoming not wide enough for my feet. Would reign 6 be a good option to try or are there other ones that would also be good. I like shoes that have a lower toe drop if possible.

    1. I’d go Reign 6 or Born Primitive Savage 1. The Savage 1 will give you a little more forefoot room but it has a denser midsole, so that could be something to consider if you want a shoe with a little more “bounce” to it (the Reign 6!).

  4. Thanks Jake! I alternate Hazes with Metcon 5, these start to suffer as of late but I just love them specially for leg days, plus I find them both different enough they complement each other. I didn’t like 8 or 9, so I was actually thinking on having the Reign 6s as a potential candidate in case my Metcon 5s gave up (although the option of scanning through ebay for older Metcon is always there).

  5. Hi Jake!

    Nice review, I must say it’s even gotten me hyped about these!

    I’ve been focusing on lifting more and more in the last year and I might see if I pick these up!

    I would like to ask you how do these stack up with the competition: If all were the same price, would you get these above Hazes or RAD Ones? Or even above Metcon 4, which I know are some of your favs? They actually kinda look like the old Metcon 4-6 visually to me!

    Thanks and keep up the good work!

    1. Adding to Jose’s comment, would you prefer the reign 6 over the new x4?

      I feel the x4 is a tad lighter (about an ounce), but the reign 6 seems more well rounded overall.



      1. I like the Reign 6 a bit more, but that’s also because I love minimalist-feeling trainers. I have a full YouTube video coming out discussing their breakdown next week. Either are solid, though, and I would instead choose based on your performance feel/fit preferences!

    2. It’s tough because each model has its perks. I love the Haze for its daily wear functionality, the RAD for their responsive ride/hybrid-friendliness, and the Reign 6s for their “minimalist” and athletic feeling. Truthfully, what will be outright “best” will depend on your preferences within those shoe asks. I’ve hit similar weights in every model and enjoy each’s versatility for cross-training and CrossFit.

      IMO, if you want to try something new, I’d give the Reign 6 a go. They’re easy to return, too, which is nice because then you can seamlessly transition into the RAD or Haze which are not as easy if you decide to go that route!

  6. Hi Jake, I love your article reviews& youtube reviews, they are very helpful. So I love UA products & I have the tribase Reign 4, I love the feel of my fit in the shoe, they fell stable on heavy lifts, a bit stiff for sled pushes, & flexion movements. Fit for me was TTS, & I like the plush midsole feel. My question to you is, this has a drop in midsole, so is the 2mm heel to toe w that?! & If not what’s the heel to toe with it? Does the shoe require it?! Less fuss& just lace up & go are my type shoes. You helped me cancel out the Strike Mvmnt & only other option I like(I prefer under 6mm) is the R.A.D Ones & the reign 6. Any additional insight is welcome.

    1. Yes, I believe it’s with the drop-in midsole. If you want to swap in a thinner insole you can definitely do so, I’ve played with doing that a bit. You won’t get as much cushion, though, FYI. I’d give the Reign 6 a try, honestly. They’ve been really solid!

Leave a Reply

Your email address will not be published. Required fields are marked *