I can highly recommend. The headphones really provide no noise cancellation at all or at least nothing you wouldnt get from just a pair of winter earmuffs. So not totally liquid, but not a powder. At the same time, I also contacted the retailer Brandissimo (in Italy) and also complained to them. I got these a size up from his current size but found that the opening of the shoe wasnt wide enough to get his foot into. That is a major plus for me and my size 10 feet. Good face wash 1/2 size or loose full size, size down. Only time will tell This is a very nice sandal , so your experience might be different, as far as the comfort level goes. Going back to Birkenstocks.