Here’s a tip from Izaac about wader belts:
When wearing breathable waders and wading in water up to your waist loosen your belt after you are in the water at that depth to let the water pressure push the air out of your waders. Then you can tighten the belt. If you don’t do this and you lose your footing and fall in the water, the air in your waders will cause them to blow up like a balloon causing your legs to rise and you will have big trouble gaining a foothold. Believe me on this because it happened to me just last year. Izaac, or in this case my fishing buddy didn’t tell me about this until after it happened.