Amazon prime is great for this so returning was very easy. They are extremely well built and sturdy. My last pair of cans my wife bought, I love the woman, they were loud decent sound but lacked clarity and contrast and were twice as expensive. great for the price. This happened from the day I got it. The adhesive area was large to accommodate weight described and its clear design made it unnoticeable. Sans, la sourie brille de toutes les couleurs. This small case is so perfect for what I needed it for. Bass is heavy, fat and strong but does not overwhelm the listener. Extended or retracted, mute button on or off.