Hylo Athletics is a unique shoe company looking to make some bold changes in the running world. Their focus leans heavily into sustainability—an area that has historically been difficult to balance with performance. More often than not, it feels like you either get a more sustainable build with some compromise in run quality, or a high-performing shoe that comes with the usual environmental tradeoffs.
We reviewed the Hylo Impact a few years back, and while it was a worthwhile attempt, it didn’t quite hit that balance point. Now Hylo returns with the Hylo Axis, another swing at that same goal—a daily trainer aimed at bridging the gap between sustainability and real-world run performance.
Sustainable Steps: Hylo Athletic’s Impact shoe and their Eco-Friendly Footprint
The result is a shoe that leans toward consistency, settling most naturally into shoes for easy mileage days.
Sustainability:
With the ethos of this company in mind, it seems disingenuous to begin the review without leading off with sustainability. The Hylo Axis makes a resounding statement with 40% of its composition being bio-based content, a figure that is seen even more when you start looking at different components of the shoe.
Remarkably, the upper portion boasts 60% of bio-based material, crafted from a castor bean-derived knit. Moving down, the midsole showcases an innovative blend of 50% bio-based and nitrogen-infused EVA (called Hyperbolt+), while 60% of the outsole comprises natural rubber. The carbon footprint of one pair of AXIS is 9.05kg CO2e.
Looks:
Regardless which of the 5 colorways you choose, this is a crisp-looking shoe. Each is an earthy tone (think white, browns, and grey/black) and thus aligns with Hylo’s sustainability focus, as heavy dyeing processes aren’t environmentally friendly. Visually, the Axis is more streamlined and running-focused than the Hylo Impact, and overall it’s a solid-looking shoe.
It continues Hylo’s lightning bolt theming across the outer midsole and logo, which is appealing. Other ongoing design touches, like inspirational quotes and outsole toe wrapping, are carried over from previous models, though they are less compelling overall.
Construction:
The Axis is a high-stack daily trainer with a stability-leaning platform. It’s on the heavier side for its category—not a brick by any means, but you can feel it when picking it up or running in it. A wide base and slightly stiffer construction give it a naturally guided feel without relying on traditional stability features.
There also seem to be ways for Hylo to reduce weight in future iterations, such as trimming down the outsole, which suggests further refinements could help get closer to that “just right” balance of sustainability, comfort, and performance.
Fit runs slightly snug, especially up front, with a generally secure, dialed-in hold.
Specs:
- Weight: ~10.5 oz (men’s)
- Stack Height: 38mm heel / 30mm forefoot
- Drop: 8mm
Upper:
The upper is one of the more refined elements of the shoe and a clear improvement over the Hylo Impact. The Impact had a more over-voluminous upper that didn’t provide an expected locktownand sometimes caused folding or bunching during the run. The Axis addresses this with a more streamlined, structured upper that wraps the foot securely while remaining breathable and comfortable.
Lockdown is consistent without feeling overly restrictive, and the toe box tapers slightly while still providing a reliable fit. Runners who prefer extra room may notice the taper, while those who like a snug wrap will likely appreciate the improvement.
It also carries some crossover appeal—easy to wear casually without feeling overly technical, making it a surprisingly good travel shoe: something that looks good, feels great when walking, and performs well enough on shorter runs.
Midsole:
The Hyperbolt midsole is comfortable and predictable, landing somewhere on the firmer side of neutral. It’s not trying to be flashy or springy, but it does a nice job keeping your feet cushioned for everyday runs.
This shoe really shines in middle-distance efforts—roughly 10–15k—where it hits a sweet spot in both comfort and support. Beyond that, it’s still fine, but it might start to feel a little heavy or less lively for longer sessions. The midsole plus the stable platform keeps things controlled rather than bouncy, which fits the guided feel of the shoe.
Outsole:
The outsole gets the job done without fuss. Grip is solid for typical road conditions and coverage is good, but it’s not overbuilt or heavy. It’s durable enough to handle regular mileage, though it doesn’t wow you with longevity. Overall, it’s reliable, predictable, and keeps the shoe feeling steady underfoot without adding anything unnecessary.
It does have some cool words of encouragement however.
Final Thoughts:
The Hylo Axis is a step in the right direction for Hylo’s sustainability and performance goals, but there’s still room to grow—particularly around weight reduction. The stack is high and the midsole comfortable, putting it in line with other established high-stack trainers at a similar (or less) price point with the running components completely locked in from years of fine tuning.
The price addition – which isn’t exorbitantly high (I’d say probably $15-$25 over similar-style shoes) likely reflects the cost of sustainability, which isn’t a knock against Hylo.
Overall, it’s a solid, stable daily trainer that delivers predictable and comfortable runs in the 10k–15k range, more than enough for most runners. For someone looking for a versatile option that works beyond just running (I have been pairing these with jeans on occasion), the Axis could make a really good travel shoe: it looks clean and casual, feels comfortable when walking, and performs well enough for short/medium runs without needing to handle high-mileage days.
