HOKA ONE ONE Men's Bondi 4 Shoe (11.5, Grey/Citrus) fabric Lycra ComfortFrame Upper TPU External Heel Counter Provides Support Early-stage Meta-Rocker Provides Propulsion - Flat-waisted Geometry Provides Inherent Stability Full EVA Midsole Provides Signature Bondi Cushioning 10 Deg Heel Bevel Provides Smooth Heel Transition - Strategic rubber placement provides durability