In article t,
"Dave Van" wrote:
Sounds close to what I was thinking it might be. I was thinking that there
was some kind of open cell urethane foam cushion inside that gave it a full
shape.
True. I should have mentioned that. Also, the fill they use has a
significant insulating factor (R-factor) so it keeps the undersides of
my knees comfortably warm.
Whit
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