Proto Gamma
Price 240 €
Ena’s purest expression of the Structure of Speed. The lightest, most resilient shoe in the PROTO franchise — engineered to carry seasoned runners through their longest, hardest efforts, and a step beyond. Proto Gamma is ena’s race day shoe.
Approved by World Athletics for road running.
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Shipping & Returns
The Proto Gamma runs the AXICORE system, ena’s unique proposition. The technology is developed with Hôpital de la Tour, a certified Swiss medical center. Our AxicoreΤΜ system optimizes the relationship between the upper, midsole, and outsole to work as one to control energy and direct it forward.
The Proto Gamma is ena’s most radical running proposition for racing. The shoe features a monofilament upper for optimal weight control and structured feel. The midsole is made of the lightest and most resilient grade of our Silphion foam and complemented with an 8-layer carbon shaft to drive propulsion and control oscillation through every stride. The structure comes complete with the KPU outsole, a lightweight compound that offers marathon grade adherence.
The Proto Gamma runs true to size.
- Weight: 208 (Size: EUR 42)
- Sizes: 36-47
- Drop: 7.2mm (Midsole stack heights: 37.5mm heel / 30.3mm forefoot)
- Neutral Stance
Please click the image to use our sizing tool to ensure the perfect fit for your performance running shoes.
| US | UK | EU | CM |
| 4 | 3 | 36 | 23.2 |
| 5 | 4 | 37 | 23.9 |
| 5.5 | 4.5 | 37.5 | 24.2 |
| 6 | 5 | 38 | 24.5 |
| 6.5 | 5.5 | 39 | 25.2 |
| 7 | 6 | 40 | 25.9 |
| 7.5 | 6.5 | 40.5 | 26.2 |
| 8 | 7 | 41 | 26.5 |
| 9 | 8 | 42 | 27.2 |
| 9.5 | 8.5 | 43 | 27.9 |
| 10 | 9 | 43.5 | 28.2 |
| 10.5 | 9.5 | 44 | 28.5 |
| 11.5 | 10.5 | 45 | 29.2 |
| 12 | 11 | 46 | 29.8 |
| 13 | 12 | 47 | 30.5 |
Engineered monofilament vamp
Our lightest and most structured upper, made from recycled material. Supple where you need breathability, structured where you need hold, and built to keep its shape over distance.
Microsuede lining
Chosen to cut weight and bulk without giving up comfort over the long haul.
Bio-based midsole
Featuring the franchise’s lightest and most resilient foam, for powerful energy return during your most competitive efforts.
8-layer carbon shaft
The proprietary carbon shaft construction drives propulsion and controls oscillation through every stride, taking the platform to its absolute limit.
High-Grip KPU outsole
A high-grip compound engineered for minimal weight and confident traction on race day, delivering confidence at every stride.
Patented sole design
Featuring a proprietary sole unit design protected under US Design Patent D1,125,803 – a testament to our unique engineering and innovation.
Key Features
- Structure of Speed
The Proto Gamma runs the AXICORE™ system, co-developed with Hôpital de La Tour in Geneva. It optimizes the relationship between the upper, midsole, and outsole to work as one to control energy and direct it forward.
- Bio-based Silphion® foam
The franchise’s lightest and most resilient grade, tuned for regulated energy return over the longest, hardest efforts.
- 8-Layer carbon shaft
Proprietary carbon platform engineered for powerful propulsion and oscillation control through every stride.
- Minimal weight
An engineered monofilament upper combined with a weight-cutting microsuede lining and textured, ribbed-edge laces that stay locked, kilometre after kilometre.












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