About this product: Upper: Calf leather Lining: Leather/Textile lining Insole: (Removable) FLUIDFORM™ Direct Comfort Technology, PU/TPU dual-density sole Color: Navajo Brown Description: A slip-on that combines relaxation and sophistication. The upper is made of premium suede manufactured in our own tannery. The PU/TPU dual-density sole uses a unique new manufacturing method that involves hollowing out the soft TPU inner part and injecting lightweight and flexible PU, achieving both lightness and flexibility. ECCO's FLUIDFORM™ (direct comfort) sole, which makes it possible to reproduce an anatomical last (wooden mold) based on ergonomics, and high-quality premium leather manufactured in our own tannery provide unparalleled comfort.