TPU stands for Thermoplastic Urethane. Just that definition alone should make you know and feel that you are getting the best support against ankle roll.
When you are making a shoe with a die-cut EVA midsole, the design incorporates a stability component to compensate for the lack of rubber cupwall in the heel area. The TPU heelclip allows you to save weight without sacrificing heel support and stability.
An Injected TPU heelclip is featured on the ROWLEY XL III, and BEND 2.
