How does CircleCELL maintain energy return while being more durable than PEBA?

CircleCELL achieves this through the use of BASF’s novel ecoflex BMB biopolymer, which creates a foam with superior density and “rebound” properties. While PEBA midsoles lose their structure due to their low-density pores collapsing over time, CircleCELL’s molecular structure remains stable, ensuring that energy return does not diminish even after hundreds of kilometers.