Size: 25 PackThis class set of affordable, low cost stereo headphones is a top choice for educators purchasing on a budget. They are perfect for use with Chromebooks, Netbooks, PCs, laptops, desktops, Android products, MP3 players, CD players, Macs, iPads, iPhones, tablets, fitness equipment, and a wide range of other devices. The plug will fit all standard headphone jacks. Each headphone in the 25-pack comes individually bagged in heat-sealed plastic. The ENC-313 is a step above most bulk disposable headphones: featuring stereo sound, the class set of headphones has great sound quality for the price! These school headphones are made from a mix of new and recycled plastic. The leatherette earpads are comfortable to wear for extended use and can be wiped down between uses for easy cleaning. They are a great budget selection for school testing, class lab listening, libraries, hospitals, fitness centers, tour groups, hotels, and more. The ENC-313 classroom headphone features a 4-foot cord and a 1/8 ( 3.5 mm) standard audio plug set at a right angle to resist accidental pull-out. The plastic headband is adjustable so the ENC-313 will fit most heads, from elementary and kindergarten-age kids to adult users. These kids headphones usually last for a few months when treated with proper care.