You can get wading pants made of polyprop/fleece to go underneath the neoprene waders. These pants have stirrups on the ankles so they don't ride up when putting on the waders. I have a pair of 5mm thick neoprene waist waders with the boot bottoms, that I got from Cabalas years ago, still going strong. I use them for both goose hunting and winter fly fishing. The wading pants are also from Cabalas. Got em all on sale, great deals. I fish the tail waters of the Green river in Wyoming, down to zero degrees. At that temp though, it gets hard to keep the rod eyelets from icing over.