The shoe created to energise the run test
Built for energy return, the latest editions of the Ultraboost franchise are the Ultraboost 5 and Ultraboost 5X, redesigned for a new generation of everyday runners.
FAQs for Boost Technology
What are the main technical upgrades in the ULTRABOOST 21?
The core development is the redesigned torsion system, featuring the new adidas LEP (Linear Energy Push), which provides a 15% increase in forefoot bending stiffness. This works in tandem with the proprietary BOOST™ midsole, which contains 6% more capsules than its predecessor, optimized by an exaggerated heel curve for maximum energy return.
How does the ULTRABOOST 21 contribute to sustainability and performance?
The silhouette represents a "sensational blend" of performance and ethics. It utilizes PRIMEKNIT+ for a precision fit and PRIMEBLUE technology—a high-performance recycled material made in part with Parley Ocean Plastic. These innovations ensure the shoe meets industry standards for both reduction and athletic.
What did the global study reveal about the benefits of running in these shoes?
A global study commissioned by adidas Running highlighted that running significantly aids mental and physical wellbeing. Results showed that runners are 20% more likely to experience increased energy levels ( uptake efficiency), and 1 in 3 respondents identified mental health benefits as their primary motivation for staying active.