The AFTCO Hydronaut Waterproof System has everything you need in cold weather fishing gear. When you need a dependable layering system, reach for some of AFTCO's best fishing bibs for cold weather and waterproof fishing jackets. Need a little extra warmth? The Hydronaut insulated fishing bibs and insulated fishing jackets are the go-to solution for fishing in the coldest temperatures. Next time there’s rain in the forecast, don’t leave home without grabbing your Hydronaut rain gear first.