Here at STRIDE LAB we try our best to fit our friends/customers in shoes that fit their foot properly.
In Japan it can be difficult to find shoes over the size of US10/28cm at your normal shoe shop. Fortunately for you larger feet folks, we carry up to size US12/30cm in some models.
We also understand that many ALTRA users have large feet so we carry relatively large size shoes.
Here is a breakdown of the ALTRA shoes and sizes we carry:
Up to Size US11/ 29cm
Lone Peak 3.5
Up to Size US11.5/29.5cm
Up to Size US12/30cm