Marvel Guardians of the Galaxy Vol. 2 Groot Music T-Shirt Get ready to rock out to an "out of this world" space tune with the Marvel Groot Guardians of the Galaxy Vol. 2 Music White T-Shirt! Baby Groot is featured in a sleek black print, holding Quill's beloved cassette tape, with "Guardians of the Galaxy Vol. 2" across him on this fun white Groot shirt. 100% Cotton.