The Pro Gammarus SW Shell Back from Pro Sportfisher is an improved and enlarged version of the classic Gammarus Shell, specially designed for saltwater flies. With a wider profile, more pronounced eyes and segmented domed ribs, it offers unrivalled realism. Its subtle transparent grey design allows the underlying materials to show through, offering infinite customization in body creation. Available in 6 sizes, it adapts to a variety of mounts and techniques to effectively target coastal species.