Zalando sale currently on, Air Huaraches in some colours reduced to £53.99, and then 9.2% cashback from topcashback.co.uk, so should be about £49.20 in the end...
Can also be used on other trainers/clothes too...
EDIT: Yeah, made an error in the final price, note to self, don't copy/paste
from my other post past midnight, my brain stopped working properly...
EDIT2: New voucher code added ;)
EDIT3: And voucher code MVCVYS6W now dead too :(
Though you can either:
a) get 15% by signing up email to newletter
b) students get 10% via unidays
c) check myvouchercodes.co.uk to see if they've updated the 15% off voucher code