Walk your way to summer cool The new ECCO GOLF BIOM® C4 blends comfort with innovative performance and a contemporary, sneakerstyle. Some of ECCO’s most advanced technologies are used in the next generation of ECCO’s BIOM® C4, including an updated BIOM® last for natural motion and superior control. For 360-degree breathability and 100% waterproofing, the shoe has a GORE-TEX SURROUND® construction, which is combined with an EXHAUST GRID that scoops fresh air towards the sole. The progressive ECCO MTN GRIP outsole has three sections providing traction, stability and rotational support.