The steel is thick. I honestly could not be happier with these! Würde jederzeit wieder hier bestellen ! Havent needed the bottom shelf, but I guess its more useful than nothing. Controls difficult. The microphone rotates to get out of the way. and when I retraced my steps, my phone was on the other side of the house - 25 feet way with a couple of solid brick walls on a direct path. Totalmente impractico, si lo que buscas es que ocupe poco espacio y tener comodidad para agarrar tus zapatos. At 61 simple is better. My foot completely covered the slipper, the thong was very tight on the instep.