The Simms PG-12300 Fleece Midlayer Bottom sets you up for warmth you can rely on inside your waders on the coldest days. A grid-fleece interior traps heat next to your body without adding bulk or limiting your range of motion. A front zip offers easy access when nature calls. Tapered lower legs integrate easily with boots and waders. Simms PG-12300 Fleece Midlayer Bottom Features: Abrasion and odor-resistant fabric Grid-fleece interior Tapered lower leg for wader integration Button- and zip-fly with integrated belt make them easy to wear on their own Hand-warmer pockets FABRIC TECH: Body: 95% polyester / 5% spandex