This Sack-O-Phones includes 100 sets of HamiltonBuhl® HA-BUD ear buds - so comfortable you will wonder where the music is coming from! Featuring in-ear design, these sleek, quality ear buds have a 4 ft cord and soft, easy-to-wear, foam ear cushions.The Sack-O-Phones bag is a unique storage and carry bag that doubles as a knapsack.