ACT C1 Review: An Eco-Focused Daily Trainer That Gets Close

Introduction

ACT is a small, newer brand out of France focused on responsible shoe making, and the C1 is its take on the eco-friendly daily trainer. The shoe leans on recycled and bio-based materials throughout, and at $200 it sits at the upper tier of daily trainer pricing. So the question is simple: does the sustainability story come at too much of a performance cost?

After putting solid mileage into the shoe, the answer is more encouraging than it used to be for this category. The C1 earns an overall B and a green light, with a few clear caveats around the lacing system and pace.

Upper: Biofly Mesh Made from Castor Beans

The upper is a mesh called Biofly, made from castor beans. That choice is genuinely well researched: castor is one of the most renewable-friendly resources for this kind of material because it needs little water and can grow on marginal land that is not suitable for other agriculture, so it does not compete with food crops the way corn-based materials can.

Fit is true to size and the upper feels breathable and light on the foot once you get going. The trade-off is in the details. The material does not feel soft or luxurious against the foot, some overlays feel firm and stiff, and the tongue and laces come across as slightly flimsy. The lacing is a real concern too: despite being advertised as a secure sawtooth system, it came undone during a run.

Midsole and Ride: Nitrogen-Infused Foam

This is where the C1 quietly wins. Eco-focused shoes often pour their development energy into the foam and end up feeling blocky, but the nitrogen-infused midsole here genuinely works. It has a bit of resiliency when you compress and push off, and it feels less like a compromise than most sustainable midsoles.

The spec sheet reads 34 mm at the heel and 30 mm in the forefoot for a 4 mm drop, but the stack feels generous, almost higher than the numbers suggest. The foam is firmer than expected for an everyday trainer, and the rocker took around 20 miles to warm up to. After that, it started earning a place in a regular rotation.

Outsole and Traction

The outsole uses a generous amount of rubber, and the material appears to be natural rubber, consistent with the brand’s sustainability focus. Grip was fine with no traction issues on the road.

Testing was limited to dry road conditions, so wet-weather grip remains an open question, but nothing about the outsole raised concerns during regular running.

Performance: Where the Compromises Show

Pace is the sticking point. The rocker is not as smooth as hoped, and going faster takes noticeably more effort, whether on recovery runs, tempo efforts, or a speed workout. Weight plays into that: a size 10.5 comes in at 266 grams (9.4 oz) and a women’s 7.5 at 225 grams (8 oz). That is neither light enough for easy workouts nor heavy enough to be disqualifying, landing right in daily trainer territory.

The ride is also firmer than anticipated for the category, and runners coming from plusher or smoother shoes will feel the ground more firmly and may need a few runs to adjust. As an eco-friendly shoe, though, the performance is respectable. Compared to what this category used to offer, the C1 walks the line between sustainability and performance better than most.

Value

At $200, this is a steep price for a daily trainer, sitting at the upper tier of pricing for the category. At that level you would typically expect a true super foam, a dual-density setup, or a plate. The C1 is a straight slab of foam, so the value only makes sense if you genuinely like the shoe and what it stands for. On pure price-to-performance, it is the weak spot of the package.

Buying Advice

Buy the ACT C1 if sustainability is a priority in your rotation and you want a daily trainer with a pleasant, resilient ride at easy and moderate paces. Skip it if you want maximum cushioning technology or a shoe for fast workouts, or if a finicky lacing system would bother you. A few refinements, particularly the lacing and a softer upper feel, could push the next version into mainstream performance territory.

Conclusion

The ACT C1 scores an overall B: well researched eco materials, a surprisingly good nitrogen-infused midsole, and a sleek look, held back by an upper that lacks refinement and a ride that is firmer and slower than its price suggests. It is a step in the right direction for responsible running shoes, and a fair pick if that mission matters to you.