Smooth or pebbled nubuck leather crafted by ECCO that gives an elegant air with a laid-back feel Derby shoe with classic, formal features such as a leather welt but a modern feel and functionality Removable inlay sole provides optimal in-shoe comfort and optional extra width when taken out This edition of the ECCO ST. 1 Hybrid is a three-eyelet Derby that's sleek and sophisticated but has the feel and comfort of a sneaker. It features an ultra-light PHORENE™ midsole and our SHOCK THRU technology for shock absorbency and a pleasant walking experience. This makes it an ideal choice for the office or your weekend social events. Soft ECCO PHORENE™ midsole offers energy return while our innovative SHOCK THRU point provides shock absorption with every step Lightweight sole provides cushioning and flexibility using ECCO FLUIDFORM™ construction Leather and textile lining offers inner comfort with a leather-covered inlay sole offers a stylish look and feel