I think the underarms would be fine if I had ordered my regular size (L). Fix the buttons and improve the sound a little more, and these would absolutely perfect. The ends of the cords seem to break too( Why I have the tape on it). Wir haben uns jetzt für eine andere Marke in Größe 28 und mit einer Innenlänge von 18 cm entschieden. Extremely well made product that an audiophile would be expect from B&O. Muy bonito, buena calidad de la tela y el tacón. Wouldnt buy again. I was skeptical at first but its very well built, affordable, only took 5 minutes to assemble and can add more levels to it! 5 eco boost I bought these for my 15 month old little girl.