Ecco O2 are perfect shoes for both urban or trail adventures. Comfort and style is one the main features of this model. Thanks to the used technologies Ecco O2 beats other shoes on the head! Upper is made from the highest quality leather, perforations and GORE -TEX ® membrane which make them 100% waterproof and breathable. Outstanding air permeability is mainly due to technology GORE-TEX ® Surround ™ (across the midsole have been applied vents). Cool from every angle - Ecco O2.