Hylo Athletics Hylo Impact: First-Run Review of a Sustainable Daily Trainer

Introduction

Testing a running shoe from a brand you have never worn before is always interesting, because you genuinely do not know what to expect. That was the case with the Hylo Impact from Hylo Athletics, a UK-based running brand founded in 2020 with a clear mission: protect the planet and create high-performance shoes with a low impact, using natural and biobased materials in their construction.

Hylo Athletics classifies this shoe as their max-responsiveness, highly cushioned daily neutral trainer. It retails in the UK for £50. My pair in a UK 9.5 came in at 314g, with an 8mm heel-to-toe drop, a 33mm stack height at the heel, and 25mm under the forefoot. The pair sent over arrived in a stealth all-black colorway, which I really like, though there are four other color options available in both men’s and women’s fits.

Construction: Green First, Performance Second

Sustainability is the story of this shoe’s construction. The upper is a lightweight knitted mesh for comfort and breathability, made from 100% biobased nylon derived from castor beans, with a DWR water-repellent coating. You also get a corn-derived lining, a lace closure, and a gusseted tongue. Padding around the ankle collar, heel cup, and tongue is moderate, and structural overlays at the heel, around the lace eyelets, and wrapping the toe box add substance and durability. Reflective details finish things off for safer nighttime running.

Inside, a molded 5mm insole made from 20% biobased foam offers an extra layer of underfoot plushness. The HyperBolt midsole uses supercritical nitrogen-injected foam with added bio EVA to increase responsiveness and reduce weight, plus a guide rail system that sinks you slightly into the midsole. Pure Glide geometry is worked into the midsole to help running efficiency. The outsole design is unusual and apparently inspired by Formula 1 tires.

First Run: Eight Miles on the Roads

For a brand-new shoe straight out of the box, I aim for around seven to eight miles on a first run, though I would generally recommend five or six miles if the shoe is very different from what you are used to. On this outing the Hylo Impact fit true to size: the UK 9.5 was just right on length in the toe box. By mile two, the upper was giving a comfortable, secure lockdown around the midfoot and a good hold in the heel.

By mile three I was surprised by how bouncy the HyperBolt midsole felt, delivering what seemed like strong energy return. The run flew by, and on mile five the outsole felt super sticky across a couple of sections of genuinely mossy, greasy pavement. By mile six the Pure Glide geometry in the midsole felt efficient, and the full eight miles wrapped up at roughly 7:30 to 8:00 per mile, in challenging headwind conditions.

Upper and Fit: Comfortable but Pointed

The upper felt comfortable on the run and works well for my foot shape, but it does pinch in quite early at the toe, leaving a very pointed, extremely shallow toe box. If you have any real width or volume to your foot, you would likely struggle with the fit. Even with my relatively narrow feet, after eight miles I could feel the upper rubbing slightly at the outside edge of my left big toe, and a couple more miles might have produced a hotspot.

It is worth remembering this was a brand-new shoe straight out of the box, and things like this can soften up over a few runs. For everyone else, the gusseted tongue and lacing system gave a nice secure midfoot hold, and the laces stayed locked down for the entire run.

HyperBolt Midsole: The Biggest Surprise

The midsole was the biggest surprise of the day. This supercritical nitrogen-injected foam performed well, and I would go as far as saying it is one of the better-feeling nitrogen-injected foams I have run in. Cushioning levels are strong for a daily trainer, and energy return felt very similar to the midsole on the Saucony Endorphin Speed 4, even though this is not a plated shoe. The Pure Glide geometry felt efficient in the same way Speedroll technology does.

Pushing into the foam at home, it felt nicely cushioned and very bouncy, and unusually that bounce carried over onto the run rather than disappearing. That cross-over from hand-press feel to on-road feel is rare, and it is the main reason this first run left such a positive impression.

Outsole Grip: Sticky When It Counts

The unusual treaded outsole design delivers confident grip. This was a fairly dry run overall, so the really wet conditions, where the brand says the outsole truly excels, remain untested. But crossing those mossy, slippery pavement sections, the sticky rubber pods inspired real confidence.

Durability is the one thing a single eight-mile run cannot answer, and that is where long-term mileage will tell the real story. Early wear signs, or a solid durable build, will only reveal themselves over weeks of running.

Buying Advice

The Hylo Impact makes the most sense for runners with a relatively narrow foot shape who want a cushioned, responsive daily trainer with genuinely sustainable construction. If you have wide or high-volume feet, the shallow, pointed toe box is likely to be a dealbreaker. Runners who care about the environmental angle will appreciate the castor-bean nylon upper, corn-derived lining, biobased insole foam, and especially the UK take-back recycling scheme: once the shoe reaches the end of its life, UK customers can arrange to send it back to the brand to be recycled. That is something more of the running shoe industry should offer.

At £50 in the UK, the price sits comfortably for a shoe that performed like a trainer well above its cost on this first outing. Just factor in the fit caveat and the unproven long-term durability before committing.

Conclusion

The Hylo Impact was a genuinely positive first experience with Hylo Athletics. The HyperBolt midsole is the standout, delivering cushioning and energy return on par with far more expensive trainers, the grip held up on greasy surfaces, and the sustainability credentials are more than marketing talk. The pointed toe box limits who this shoe will fit, and durability needs more miles to judge, but as a first impression of a young UK brand, this is a very encouraging start.