Brown Suede Moccasin Booties Size Large Z

Beautiful, gently used, brown suede moccasin boots with suede ties, fringe around the ankles, and what appears to be plastic? soles. These were made and bought in Canada and have a simple cotton lining with some cushioning. These booties are very snug, made for a slim foot, but they did fit me as a 7 & 1/2 size. They are very soft and comfy but do not have any kind of support. I'm not sure about the sizing because I bought them in Canada and thought they were a 7 and now realize the boot says L Z (not 7) so if anybody can explain what size that is I'd appreciate it. They are still in very good shape and were rarely worn.