HOKA ONE ONE Hoka Constant 2 Women's Running Shoes - AW16 fabric-and-synthetic Breathable Mesh Upper - Delivers an adaptive, comfortable fit. with maximum breathability. Padded Tongue - Helps provide a frictionless, customized fit and extra protection from debris. Asymmetric Lacing for Reduced Tongue Pressure TPU External Heel Counter - Provides Support. Late Stage Meta-Rocker Geometry - Provides improved stability.