He checks you out, he grabs your adjusting straps and he tightens everything so that your chest is crushed, your shoulders are crushed down, and, of course, he's tightened so your voice goes up a couple octaves as well.
Te revisa, toma tus correas, y ajusta todo presionando tu pecho, apretando tus hombros, y, claro, lo ajusta de manera que tu voz sube un par de octavas también.