As if the Simms G4 waders weren't famous enough, the G4Z Stockingfoot Wader adds a YKK waterproof front zipper, so we don't have to get half-undressed just to take a pee in between fish. Made in Bozeman, Montana, the G4Z features premium GORE-TEX waterproofing-with 3-layer GTX up top for more mobility and breathability and 4-layer GTX down low for better durability and abrasion resistance. In addition to the iconic front zipper, these waders also include micro-fleece lined handwarmer pockets, zippered chest pockets, and abrasion-resistant gravel guards for Simms' most durable, fully featured waders.