How, exactly, would one measure 2cm of width inside a hard (or even soft) boot when your foot is in there??So theres a shell fitting rule FOR SKI HARD BOOTS with which you take out the liner and put your foot into the outer shell. The optimum length and width is sth like 5-15mm length, 2mm width.
Does this rule apply to softer snowboard boots??
none? so my feet would be of the same as as the outer shell and they the boots will be super duper tight after inserting the inner liner?It's the two finger rule for the "average" rider. You pull the liner out shove their foot in the shell push their foot till the big toe is touching the shell shove your hand down the back of their calf with your index and middle finger pointing down. If they both fit in there snug between the heel and the shell that's your fit. That's a ski boot fit. Snowboard boot you want 1 finger for the 'average' user. If you want a performance fit you ideally want none.