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ABOUT US
United States
© 2025 True Motion Running GmbH

Support and safety: your foot lands securely and stably in the center of the U-shaped technology – even better thanks to Biological U-TECH™.

Almost like floating: You run in U-TECH™ Technology like on a very comfortable trampoline. Our innovative Transparent Hybrid Foam foam has an energy return of 75%.

Unprecedented comfort for your feet: the new, innovative True Motion Transparent Hybrid Foam and the best materials let you float.


Support and safety: your foot lands securely and stably in the center of the U-shaped technology – even better thanks to Biological U-TECH™.


Almost like floating: You run in U-TECH™ Technology like on a very comfortable trampoline. Our innovative Transparent Hybrid Foam foam has an energy return of 75%.


Unprecedented comfort for your feet: the new, innovative True Motion Transparent Hybrid Foam and the best materials let you float.
PRODUCT
DETAILS
PRODUCT
DETAILS
RUNNER
PROFILE
For all runners who look for a stable, very well cushioned, and extremely comfortable running shoe. The newly developed True Motion Transparent Hybrid Foam, made from EVA, TPU, and TPE, combines soft cushioning, high responsiveness, and long-lasting durability. The new insole made of open-cell memory foam provides additional comfort and a personalized fit. We don't use categories like neutral or support. Our technology centers the point of force application during your gait cycle. Thus, we remove the cause for non-physiological stress and avoid the occurrence of problems in the first place. No matter whether you ran in a neutral or a stability shoe or used orthotics before, you are secure and well-protected in the U-TECH Aion 4.
Offset
Statically 10 mm. Since your foot sinks into the center of our Biological U-TECH™ Technology when you run, it is at a dynamic foot-neutral offset of 0 mm in less than 50 ms after footstrike. This enables a highly efficient stride, reduced load, and a maximum responsive push-off from the ground.
Use
Short, long and ultra-long runs on predominantly firm surfaces.

RUNNER
PROFILE
For all runners who look for a stable, very well cushioned, and extremely comfortable running shoe. The newly developed True Motion Transparent Hybrid Foam, made from EVA, TPU, and TPE, combines soft cushioning, high responsiveness, and long-lasting durability. The new insole made of open-cell memory foam provides additional comfort and a personalized fit. We don't use categories like neutral or support. Our technology centers the point of force application during your gait cycle. Thus, we remove the cause for non-physiological stress and avoid the occurrence of problems in the first place. No matter whether you ran in a neutral or a stability shoe or used orthotics before, you are secure and well-protected in the U-TECH Aion 4.
Offset
Statically 10 mm. Since your foot sinks into the center of our Biological U-TECH™ Technology when you run, it is at a dynamic foot-neutral offset of 0 mm in less than 50 ms after footstrike. This enables a highly efficient stride, reduced load, and a maximum responsive push-off from the ground.
Use
Short, long and ultra-long runs on predominantly firm surfaces.



DISCOVER MORE RUNNING SHOES
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MORE RUNNING SHOES
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Keep running always: The U-TECH Aion 4 is designed for maximum comfort – for 5 km runs to ultra marathons. Featuring innovative Transparent Hybrid Foam, Apex Rocker, and a perfect fit for endless running joy.







| UK | EUR | CM | |
|---|---|---|---|
| US 6.5 | 4.5 | 37.5 | 23.5 |
| US 7 | 5 | 38 | 24 |
| US 7.5 | 5.5 | 38.5 | 24.5 |
| US 8 | 6 | 39 | 25 |
| US 8.5 | 6.5 |

| 40 |
| 25.5 |
| US 9 | 7 | 40.5 | 26 |
| US 9.5 | 7.5 | 41 | 26.5 |
| US 10 | 8 | 42 | 27 |
| US 10.5 | 8.5 | 42.5 | 27.5 |
| US 11 | 9 | 43 | 28 |
| US 11.5 | 9.5 | 44 | 29 |
| US 12 | 10 | 44.5 | 29.5 |
Still not sure which size fits best? Use our size guide to avoid unnecessary returns.



The new U-TECH Aion 4 takes comfort to a whole new level – on every run, in every training session. The newly developed True Motion Transparent Hybrid Foam, made from EVA, TPU, and TPE, combines soft cushioning, high responsiveness, and long-lasting durability. The new insole made of open-cell memory foam provides additional comfort with every step, while the newly developed True Motion Apex Rocker supports a smooth yet dynamic transition. This creates a smooth running sensation that feels natural and effortless – from a 5 km run to an ultra marathon.
The breathable upper made from recycled materials hugs the foot comfortably and ensures a perfect fit with a lightweight feel. The U-TECH Aion 4 is our most comfortable running shoe – designed for healthy, long runs. Keep running always.




Cushioning
Dynamic
Speed
Road
Off-road
Open ↔ size guide
U-TECH Nevos 4
160.00 USD
New








U-TECH Solo 2
200.00 USD
New
New