True Motion U-TECH Aion 4 Women azurine heather elfin yellow

keep running always: the U-TECH Aion 4 stands for maximum comfort.
For 5-km runs to ultramarathons.
with innovative Transparent Hybrid Foam, Apex Rocker, and perfect fit for unlimited running joy.

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

Trampoline effect
Almost like floating: You run in the U-TECH™ technology like on a very comfortable trampoline.
the novel Transparent Hybrid Foam has an energy return of 75%.

Heavenly comfort
previously unattainable comfort for your feet: the new innovative True Motion Transparent Hybrid Foam and the best materials let you glide.

lightweight mesh for breathable wearing comfort with a perfect fit.
3D-Print trims for stabilizing fit.
new insole made from open-cell memory foam for maximum comfort and personalized fit.
molded heel cup for perfect fit.
360° reflectivity for enhanced visibility in the dark.
secure elastic, oval, and 100% recycled laces.
newly developed True Motion Transparent Hybrid Foam for reduced weight, increased cushioning, and maximum responsiveness.
biological U-Tech technology for maximum running comfort.
aggressive rocker geometry (Apex Rocker) throughout the midsole for dynamic running and healthy roll-through.
True Motion Z-Element for optimal energy transfer.
True Motion High Performance Rubber in the outsole for secure traction.

usage area: road (5k runs to ultramarathons)
Gender: Women's
drop: 10 mm
midsole height: 36 mm – 26 mm
Weight: 250g (Size 40)

Upper material: mesh – textile
Lining: Textile
Sole: Rubber (HPR)

In-stock items usually ship from our warehouse within 1 to 3 working days. If the item is in stock in one of our stores, you can also pick it up there free of charge. In Pfronten this also works for items that are only in stock in Ronsberg: we bring them over, which usually takes 2 to 4 days. The pickup note above and the checkout show where and when you can pick up. Skis with binding mounting take a little longer: we mount them carefully and let you know as soon as your set is on its way. Personal advice is available by appointment in our store in Ronsberg. Details in our shipping policy.

We accept all major credit cards, PayPal, Klarna and Shop Pay. With Shop Pay you can pay for your purchase in interest-free instalments.

Statutory warranty rights apply, plus the manufacturer's guarantee where one is granted. You can return unused items within 14 days of receipt; register the return in your customer account. We refund the purchase price of the items minus a 5 € return fee (6.90 € from abroad); you receive the return label from us. Skis mounted according to your details are excluded from exchange. Details in our return policy.