I stuck it out and wore them several times with socks. Heels are not too high or too low just the right size. I usually have a problem with slippers making my feet unbearably hot. - you can use them (both for listening and noise cancelling) with your phone without the software if you want to, just pair like normal. Not too short, material is so soft. Dennoch bin ich noch nicht 100% überzeugt. Perfect for the job and good value Unfortunately, Birkenstock does not market a 47 EU size any longer. I like the way it fits and keeps my feet warm! I read the reviews and got 1 size bigger than his normal shoe size.