Design: Waterproof nubuck leather upper GORE-TEX footwear fabric with recycled textile designed to keep feet dry and comfortable Waterproof membrane bootie construction Swallowtail™ heel design increases stability Late stage meta-rocker designed with integrated flex grooves to help move you forward Abrasion resistant toecap and heel Heel pull tab for ease of entry Anatomical Achilles construction for increased support Topically applied PFC-free water repellency treatment Recycled content mesh and recycled polyester laces In-Shoe Comfort: Dual-density compression-molded foam midsole Rubberized EVA midsole absorbs shock in every step Molded PU sockliner with 50% soybean oil Durability & Traction: Vibram® mega-grip outsole features a traction lug design for increased ground contact HUBBLE® heel provides extensive ground contact for a smoother, more stable cruise over any terrain