Bought these for my son but these do not fit a male size 10. Then put the spare back on and tightened it down. Assembly is 4 screws. They slide around with a lot of excess space. Love the modern honeycomb design. I bought it as a second one to power up with my first mega boom while enjoying my pool this summer. Esperaba un producto que se sintiera más resistente, similar al Tone Active+ (ya descontinuado), es liviano, se siente frágil, pero tiene buen sonido, batería, me agrada que sea retráctil. I set it up and watched it booth up. So it is a bit difficult to hear someone speak when these are in the ear and in the OFF mode. If you still end up getting fakes, return them to Amazon for an exchange and they will probably send you an authentic pair of Adidas.