Entrei em contato com o suporte Razer e espero que meu problema seja solucionado, porém ainda assim, deixo registrado aqui o meu total descontentamento. The FlyBuds are very comfortable and I wore them for a couple of hours without any discomfort at all. Sound quality is extremely poor and no bass boost as advertised. Initially they seem to work great and keep the airpods in your ears. Have to say that I probably could have gotten away with the 5/6. These are lovely looking but the section for slipping toe through is too far down the flip flop, my toes do not reach anywhere near the top and my heal hangs off the back, I pulled labels off and tried them outside without thinking as they looked so good. I am truly disappointed with Sony quality with this ear buds. The writing bled a bit (but could very well have been me being left handed). My son has average, almost small, feet, not wide at all, and these fit very well. Yo uso el 43EU y cuándo me llegaron eran más pequeñas así q nada.