Just to set the record straight.....

My mark 2 gaiters are leather inners, mohair outers, plus an aluminium deflector. Belt & braces & braces in fact.
So no neoprene, except the invisible layer in the mohair.
Here's a reminder. OCD has its uses!
Hand stitched leather:

Machine stitched mohair (MrsW)

Aluminium shield.
