I need trainers (ideally black, or dark grey) for work on Saturday. I've left it extremely late but wondered if anyone could recommend any? 
I don't want to spend a lot of money if possible as it's my first weekend at work so I'm not getting a wage atm but it's care work and I reckon I'll walk between 5-10 miles on Saturday and Sunday and I need some supportive shoes. Thanking you!