A Pilgrim walking the Camino needs two pair of shoes... one for walking during the day and the one for all the rest.
When you get to the Albergue you happily remove your walking Boots/Shoes and put on the other pair.
When you go for “a Drink” or Supper... you put on the other (not muddy/dusty but lighter) pair.
Many people wear the “other Shoes” into the shower.
(very important to me) I wear my “other shoes” to walk up to 40% of the Camino.
I believe that this helps to reduce the chance of Blisters.
Each shoe rubs a different place.
My “other shoes” are.... Teva Toachi 2 Hiking Sandals
https://www.amazon.com/dp/B00DSNEPXY/?tag=casaivar02-20
I selected these because they are as good a Hiking Boots and they breath.
Going downhill... my toes don't jam into the front (which can cause your toes to be bruised, then the toenail turns black and falls off months after you get home).
OK... to answer the question of this thread.
My second shoes (hiking sandals) are a full size bigger then normal.
I adjust the straps, so my foot fits at the back of the shoe.
This gives me a ½ inch “bumper” in front of my toes to (accidentally) kick rocks on the trail.