Live and learn. Wir sind sehr zufrieden mit diesem Modell, vor allem das Band um die Ferse ist super, da der Schuh so nicht vom Fuß rutscht. ive already returned one pair cause normally i wear a 10 these run very small. its not otiginal low quality Lasts one whole day on one charge with medium-heavy use. These insoles were perfect for my new heels. Le ho testate con una corsa da 16km e 2x10mila in pista e devo dire che non ho mai avuto problemi, batteria mai scarica e mai alcun fastidio alle orecchie o dietro sulla nuca, il peso è così esiguo che ci si dimentica di averle addosso! i retired them when the sole started separating in the back. Im keeping them because they are nice; but I ordered the shoe off of the picture and am a little miffed because I really wanted the ones with the pop of pink. Soundtracks und Klassik kann aber dennoch gut Spaß machen, ansonsten füttert er mich mit Indie, Blues, selten Doom, Stoner und 90er Thrash und Death Metal, oft Singer/Songwriter und (Smooth) Jazz.