bugman, i always order one size larger, because my waders have neoprean stocking feet, both my neos obviously, AND my breathables. I have always bought wading boots one size larger because i have always had neoprean stocking foot waders. Never owned anything else. I was told to do that, and it has always worked for me. GaryB, i have never had any problem with slipping on algae covered rocks any more with the Aquastealth wading boots than i ever did with the felt "back in the days." In other words, YES, they do work as good, if not better. mark