pˌiːˌiːtˈiː plˈæstɪk fɹʌm bˈɑːɾəlz ɑːɹ jˈuːzd fɔːɹ mˈʌtʃ ʌv ɪt, sˌoʊ ɪɾ ɪz sˈʌmtaɪmz nˈɪkneɪmd ðə pˈɛt pˈɛn ɔːɹ pˈɛt bˈɔːl.
PET plastic from bottles are used for much of it, so it is sometimes nicknamed the 'PetPen' or 'PetBall'.