I normally use bluetooth earphones but sometimes I want better sound which means wires. No complaints here, just an appreciation on the quality of materials used and for an excellent price. keine Ahnung. This is the first pair of sketchers non slip shoes I am truly happy with. Also - if you have any hint of a bunion - watch out (see my photo) - will not look that cute. As for comfort, I understand that it is intended to be light weight, and is. They are perfect for my feet and at a fair price. People with narrow feet may not like the fit in the toebox of these clogs. They didnt, and now I have to return it as soon as possible to get my 13 bucks back. They were a perfect fit for my daughter.