Specific White Shoes for my NA Class

I am currently taking an NA class. For clinicals we need "white leather or vinyl shoes; they cannot be tennis shoes, clogs or open toed sandals". I asked my instructor if I could wear Dansko "clogs" even though they have a closed back but she said no. She mentioned that we should have shoes that are secured by lacing/velcro. Does anyone have any ideas for shoes fitting into the criteria? Thanks for your ideas!