The X-Bionic Terraskin X03 looks wild, but is it ready to run?

Introduction to the X-Bionic Terraskin X03

TAYLOR: Be warned, John gets wild with a preview of Love Island: Trail Shoe edition. I say that as if I have ever watched the show; however, I think he hits on a point that catches us all: excitement.

For the most part, the landscape of running footwear ebbs and flows together. There’s not a lot at any time on the continuum that is very different from the rest of the field. When something is eye-catching, it draws a lot of intrigue.

A truly intriguing brand, for me, is X-Bionic. They’re characterized by high-quality materials and a lattice-like midsole design that looks and feels distinct. In our first review of the X-Bionic Terreaskin X/00C, the “difference” was clear, but not necessarily in a positive way.

That’s why a softer-tuned midsole and adjusted upper have to have some gravity in the X-Bionic Terraskin X03. We often note that the design on paper doesn’t always align with the practical reality, so while I will be ever-skeptical, I’m also willing to be won over.

JOHN: This is a complicated review. I’ll start off by saying people are a lot like shoes. The heart wants what the heart wants. Sometimes you see a couple together, and you ask, “What does she see in him?” It’s the exact same with shoes; we’re all different and need different things to live life in this crazy world.

My initial thought seeing the TerraSkin X03 was, “Wow, the TenNine and Speedgoat had a love child outside of Hoka wedlock!” That made me want to root for this shoe, and I was immediately in, especially because it’s hyped up for downhill running, much like the TenNine was back in the day.

Nostalgia, though, can be a powerful drug that clouds our judgment, so let’s journey into this nostalgic love story.

What we like about the X-Bionic Terraskin X03

TAYLOR: Let’s break with tradition and start from the bottom.

Vibram MegaGrip is a hallmark of most shoes we try, and it’ll be the same here. Not only do we get the trusted MegaGrip, but we also get a unique outsole design that minimizes the weight while maintaining grip. The waffled design allowed for strategic placement of multi-shaped Vibram lugs to grip exceptionally well in all conditions that I put it through.

That same waffled design comes directly from the exoskeleton of the midsole called the SpeedFrame. There are two layers, effectively. The inner layer is made of softer EVA, while the outer cage is firmer. I think this design needs some fine-tuning; however, I really like the idea and the stability it provides for the Terraskin X03. The combination still wasn’t “soft” even though this is the brand’s most cushioned model. Protection is definitely there, though.

Uptop, the quality materials continue. A thicker engineered mesh, lots of cushion in the collar, and a very structured heel counter make up the protection for your foot. Like the midsole, I think there’s definitely room for improvement, but X-Bionic is on the right track with material choices… simpler might be better the next time around.

JOHN: The look, packaging, and marketing of the Terraskin X03 are among my favorite aspects of the shoe. It looks like Mr. House from Fallout made it. The shoe has a cool, sci-fi-looking design that is eye-catching, and the packaging is well done, even including a compartment for X-Bionic socks.

As far as the technical aspects of the shoe go, I love the Vibram MegaGrip outsole. It’s the shoe’s strongest feature. Throughout my testing, I never slipped, never felt sharp rocks or roots poking through underfoot, and felt stable on everything from smooth trails to more technical terrain. Based on the miles I logged, the outsole appears highly durable.

Initially, I was considering using this on C&O 100, just for a fun review, but I’m glad I didn’t. I realized after some light reading that it’s not the course the Terraskin X03 was designed for. C&O is flat with one climb that you do three times. It would have been a struggle to use this on a flat course that long. I only bring this up because, during testing, I ran three times on local trails (9 miles, 8 miles, and 5 miles), each of which felt better suited to the design.

What we don’t like about the X-Bionic Terraskin X03

TAYLOR: There will certainly be some echoes in this section as the X-Bionic Terraskin has to make some tweaks before we think it makes the grade.

My main concern comes underfoot. For a trail shoe that’s claiming lots of cushion, it feels very 2018, when dual-layered midsoles began popping up. Even with the dual layers, it was really hard to ignore the firmer EVA cage. It overpowered the inner midsole material to the point that it was hard to tell that a softer foam was in the mix.

The cage also made the ride more clunky than funky. I desperately wanted this shoe to break in, reveal some character, but it never did. Even with a rockered profile, the SpeedFrame really got in the way of a smooth ride. I think the cage is a great theory, but it should never be at the expense of the cushion they’re trying to push here. It’s simply a missed opportunity to show some diversity for X-Bionic.

Also, the fit was overdone, too. The ankle collar rode extremely high and arched inward over the Achilles, causing the foot to sit further forward in the shoe than I’d have liked. Because there’s a lot of volume, the collar left my foot in limbo most of the time I was running. Again, even the quality materials couldn’t save the experience.

At 12.1 ounces for my US M10.5 (343 grams), the X-Bionic Terraskin X03 makes it really hard to consider it over many other options in its category. Yes, there are some heavier shoes in the mix, but they tend to make up for it in fit and ride, where the Terraskin X03 doesn’t have the same backup.

JOHN: This shoe has a crazy strong chemical smell that I’ve never encountered before. It may make you high if you huff it in the car with the doors closed, man. It’s like banana-scented meth. I’m not joking.

On a practical front, my left Achilles was on fire for the initial mile or so. I’m not sure what was going on. I thought I was going to have to bail, but it got better, and I ran about 9 miles.

On a steep downhill, my toes slammed into the front of the shoe. For the most part, the US M11.5 fits well, but be careful with the fit. The fit is kinda long, but if I went down in sizing, I feel like it would have created even more issues.

Also, I don’t like having to be like this in reviews, but I really feel this is more of a fast-hike, shuffle-run-like-crazy downhill shoe. So if that’s your thing, cool, but for the majority of the trail community, this is niche gear. As cushy as this shoe looks, it’s really not, or at least it really doesn’t feel like it.

Now, on top of it all, this shoe is $215. That’s a lot for an experimental type of shoe.

Final thoughts on the X-Bionic Terraskin X03

TAYLOR: A lot of us are in the generation that truly believe that X is gon’ give it to ya. This X-Bionic Terraskin 03 is, sadly, an exception to that rule.

While design is a highlight, the Terreaskin X03 really is a shoe that feels like it’s still in beta. The unique take on a dual-density midsole and stability mechanism is something I’ve been rooting for, but its practical nature never came through for me. It received three strikes right off the bat that never got better.

Overall, this shoe felt like a quality build and had solid grip, but the overthought ride and unique fit make the Terraskin X03 a really hard one to reach for, with so many good options already available in its category.

JOHN: I really wanted to like this shoe. It’s extremely ambitious and reminds me of some of my favorite shoes, but it ultimately has significant flaws I can’t look past.

If you have any Achilles issues at all, this shoe will pinpoint them like a boxer looking for an opponent’s weakness in the ring.

Also, I know I may have gone hard on the shoe’s chemical smell earlier, but I think it all just kind of highlights that this shoe is raw, one-dimensional, and slick marketing/packaging doesn’t hide it. I feel like it needs more time and updates to get ready for prime time. It’s niche at best in its current form.

I feel like a C grade is more than fair for the Terraskin X03 because, for most trail runners, this shoe is too much of a wild card for consistent trail shoe rotation. It’s too clunky, the fit is off, and things like the smell are pretty big red flags when there are so many more consistent alternatives for the price.

You can pick up the X-Bionic Terraskin X03 for $215 from X-Bionic by using the buttons below.