You can tell the quality; its just not very showy. Mine are to the point that they?re causing electric shocks in my feet and since I?ve worn my crocs I haven?t had the pain or the shocks, they offer the perfect support and are a breeze to keep clean. Very thumping. My only complaint with the pants is the button . Now I have to replace it. Ich bin, auch mit dem Lieferzeitpunkt, sehr zufrieden. I have to say I am impressed what I got for the price. It took a bit longer than I expected to receive this product but whatever. Try to angle them as far out as possible while maintaining balance. Unfortunately they stopped charging after a couple of months but only because of the constant plugging and unplugging of the charger which I think my son wasnt delicate about.