These are freakin adorable and feel really sturdy. I tested the sound both on Quicktime via the internal Mac mic, and via the SudoTack Condenser mic. Next time Ill buy a brand with a warranty. Oder Wie gesagt was lange hält bringt eben kein Geld. Charging capabilities are subpar at best. Great price, Love it in my laundry room. Their material is very soft. I gave this rack three stars for the moment pending the outcome of my postscript comment below. Lovely quality and seem to be non slip to date, as per reviews I would say are a small fit but for me they are perfect I am a UK4 and ordered that size as I have a very skinny foot, length just fit and width also the same, which is unusual for me as normally every shoe too wide. Its comfortable while lifting weights & even better on cardio days.