ECCO Performance Leather from our own tanneries is combined with a new, super-stretchy mesh sock ECCO FLUIDFORM™ Direct Comfort Technology for cushioning, rebound and flexibility GORE-TEX SURROUND® for 100% waterproof protection and 360-degree breathability BIOM® NATURAL MOTION® Technology brings you closer to the ground for stability and control ECCO MTN GRIP has three different sections providing traction, stability and rotational support throughout the swing Removable insole for long-term cushioning and breathability, with the option of taking it out for extra width