Ecco Receptor - Inca (Bison Oiled Nubuck) - Women's: Please note that the size of this shoe may have been mislabled by Ecco on the box and/or the shoe itself. However, the Zappos.com sizing chart is correct. Rugged, hook-and-loop fastener trail sandal. Unique Ecco footbed for superior shock absoption. Genuine nubuck leather uppers for long wear. Ecco Receptor(R) walking technology in every step. Adjustable two strap secure-fit system with single adjustable heel secure-fit closure. Tongue and heel pull loops. Internal exo-skeletal wrap-around shank support. Anti-microbial micro fibre compression molded Phylon midsole. Dual Axis forefoot flex channels. Rugged design to match the terrain.