Membership Level: Basic
[Youre right about the name Graham]
No I dont think so, leastways we never had screwy in bits.
They did make you feel about 7 feet though,weird sensation, when you walked.
They looked like ordinary DMS, but with extra thick soles [about 3"].
supposed to keep your feet warmer and dryer.
I found not standing in water did much the same !.
"Steady the Buffs"