Life / Where to buy big shoe sizes (in Krakow)? [4]

Hi everyone.
Moving to Krakow in a couple of weeks.
One problem though. I'm traveling light, so I'm gonna need to buy some additional clothes and shoes on the spoth. Clothes are not that difficult to get, but my shoe size is USD 14/ EUR 48.5 (EUR 48 may be small, EUR 49 may be large). Been to Poland and Krakow several times before, visited some shopping malls, never seen my size of shoes. Any suggestions?