Simms most durable wader features a new, proprietary fabric from GORE-TEX proven over 16,000 hours of field testing. Make the most of your time on the water: Head out in the most feature-laden, abrasion-, puncture- and tear-resistant wader made. 3-layer GORE-TEX Pro Shell upper / 4-layer GORE-TEX Pro Shell lower for rugged durability in the water and on the trail Patented compression-molded stockingfeet for enhanced comfort and improved boot fit/lace bite YKK waterproof zipper for quick relief and easy on/off Two zippered chest pockets and fly patch with retractor docking station for strategic access to fishing essentials Zippered, micro fleece lined handwarmer pockets for added storage and appreciated cold-weather reprieve Built-in, lower profile GORE-TEX belt loops for enhanced strength and durability Adjustable spacer air-mesh suspender system with a low-profile fabric suspender divider Patented Sharkfin buckle for convenient hemostat retention Patented front & back leg seams for enhanced mobility and increased durability Patented 2mm abrasion resistant built-in gravel guards Anatomically engineered stocking feet Tech 3-layer GORE-TEX Pro Shell upper; 4-layer GORE-TEX Pro Shell lower and seat