I love this question!
My mom found them in a second-hand store when I was 11. I thought they were the most amazing shoes in the world and was super stoked to wear them to school. I remember other kids saying they looked like rain boots or asking if I wanted to join the army but that didn't bother me at all - it actually made me feel even cooler and more unique.
They are actually an older UK-made model and the previous owner signed them inside. As a kid I often wondered who Kathrine was and how we shared the same shoes.
The funny thing is that I can still wear them. When I got them they were slightly too big so I had to wear a thick sock, but now they are barely fitting me so I only wear them with thighs.