20% off everything instore at H&M when showing the UNiDAYS app at the checkout.
To register all you have to do is create a login then log in to your uni portal through the app to verify and then add a pic of yourself.
GIves 20% off everything including sale items.
UNiDAYS app is free to download:
Google Play (https://play.google.com/store/apps/details?id=com.myunidays)