I believe his waders fasten, not round his waist, but round his neck.
He had been drawing on his waders and buckling on his creel.
She flashed upon him the fish that had been hidden behind her waders.
You could fish from the banks, but it is better to have waders, so you can cross once in a while.
But he drew the line at waders, as not being in the department of a mere he-cousin.