At its core are three footwear styles, each merging SOREL’s heritage craftsmanship and technology with Barbour’s signature minimalism. From GORE-TEX Waterproof Fabric and Vibram traction outsoles to proprietary lightweight, comfort technology, each silhouette embodies uncompromising performance, warmth, protection and style. The Callsign Horizon Low GTX is a fusion of technical performance and enduring style with waterproof GORE-TEX Waterproof Membrane, a lightweight LIVELYFOAM midsole, and exceptional Vibram grip outsole, finished with Barbour’s Classic Tartan.