The S.Lite Hybrid Chukka Boot features: Crafted in premium leather or rugged oiled nubuck made by ECCO Trusted GORE-TEX waterproofing Tongue is bonded to the upper to better protect you from the elements Soft textile lining and thick textile-inlay sole for extra comfort Our signature ECCO FLUIDFORM™ seamless construction provides soft, flexible, fluid movement Uniquely textured, lightweight PU outsole