Probably a stupid question but here goes. I'm looking at picking up some Intuition Luxury Liners and notice they come in low, medium, and high volume. Should I assume that, like a shell, a high volume model is for higher volume feet or that the higher volume liner is thicker as to eat up more room in the shell and has no bearing on the fit of the foot in the liner?
I've heard it described both ways in local shops and know someone here can likely set me straight. Thanks.