I did notice the soles looked very sturdy for foam. The upper straps are to loose on my foot. I ordered a size 12, but the way they fit my feet they look more like 11. I have to disconnect the BT, then wait for the speaker to reset itself. (I didn?t buy bose or shure or dr dree wireless headphones and won?t compare with them. Anyhow, these are good sound and no cord. iTeknic?s previous wireless earbuds stayed in my ears and I could listen to them for long periods because they were so comfortable. Ohne ANC klingt er am neutralsten, mit ANC wird der Sound etwas komprimiert und dadurch klarer und kräftiger, aber man merkt natürlich die fehlenden Frequenzen. Then you connect the base to the audio output of your TV, Stereo Receiver, etc. I will say though when walking on a tile floor they tend to squeak.