Caddis Waterfowl System Max 4 Breathable Waders are ideal for fall and spring hunting when the weather is warmer. These waders are 100% waterproof yet breathable. They keep you cool and dry so you're comfortable sitting in the blind. The foot sizes run about a size larger than shoe size. A size 10 shoe will equate to a size 9 in these waders. *Special Pricing. Regular 199.90