little bit of data
I thing that next few line can give some new perspective to R&D team.
Last 50 years in europe tipical hight of the male increased for 20 cm.
This is reflecting also size of the shoe.
In my country tipical male shoe size for guy 20-35 years old is 42-46
size (US 9,5-11,5). I personaly have 46 Euro size.
I hope this can be taken into consideration when R&D is working.