ODC 420, foam seat or inflatable?

[TubeDude]

[cool][#0000ff]Having had a couple of inflatable seat models I can assure you that the inflatable backrest can be aired up to a degree of rigidity much greater than a piece of flexible foam. In fact, if you air them up too much they actually push you a bit forward in the seat. You have to adjust the straps to compensate for the reduced seat space.[/#0000ff]
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