Buckle Mounting Frame for Velcro Sandal

I bought 2 of these velcro sandals before which has buckle on them to strap the ankle part. This kind of design are very rare and I really like the design of using the velcro,

Using buckle made the strapping much faster in transitioning to just a normal sandal for easy in easy out or fully strapped sandal for feelings like wearing a shoe but a sandal actually.

This is a simple non-destructive mounting frame for the buckle on the straps without the need of unwinding the threads and sewing