Califone 1465269 Listening First Headset with Dual Plugs for Use with Mac and Windows, 3.5 mm, 40MW, 10 KHz, 5-1/2' Cord, Red Sold as an Each Adjustable headband for personalized fit Rugged ABS plastic construction for classroom safety Ambient noise-reducing ear cups lower outside noise so volume does not need to be as high for hearing safety Protective slotted baffles inside the ear cups cover the speakers and help prevent accidental damage from prying fingers and foreign objects