Sack-O-Phones is a unique storage and carry bag that doubles as a knapsack, and this one holds 5 black Favoritz™ headsets with in-line microphone and 3.5mm TRRS plug. Each headset comes in its own heavy-duty, anti-lice, write-on, moisture-resistant, resealable bag. Cool for School Favoritz™ headsets have a sleek appearance and offer a rugged durability for everyday use. Students will be proud to sport this mid-sized headset to use with their tablet, computer, mobile device, almost anything. The Favoritz™ series features compatibility with the latest technology by including a slim barrel 3.5mm TRRS plug for easier audio-jack insertion into devices with protective covers, in-line microphone and the exclusive Dura-Cord™ - the kink and chew-resistant cord.