Deluxe Mono Headphones hold up to frequent student use in language labs and self-guided story time; Ambient noise-reducing earcups block out external distractions to keep students on task; Slotted baffles prevent accidental perforation of the internal speaker; Adjustable headband with durable ABS plastic; Cleanable and replaceable cushioned leatherette ear pads; Fixed cord with 1/4" plug and volume control; Most popular choice for ESL and ELL applications