Ecco Receptor - Muir GTX (Black/Blue Shadow/Black) - Men's: Rugged trail sneakers. Unique Ecco footbed for superior shock absoption. Synthetic leather and textile uppers for long wear. Ecco Receptor walking technology in every step. 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.