The Hamilton Buhl SOP-HA2 Sack-O-Phones includes 10 Hamilton HA2 Personal Headphones with Foam Ear Cushions. Sack-O-Phones packaging is a unique bag that doubles as a knap sack and holds 5 deluxe or 10 personal headphones. It's a great way to store headphones easily and economically, no need for costly plastic cases for storage. Sack-O-Phones Includes:• (10) HA2 Personal Headphones with Foam Ear Cushions• (1) Sack-O-Phone Carry BagCompatible with:• MP3 Players• Cell Phones• Tablets / eReaders• Computers (Mac & PC)• CD Players / Stereos• TVs• Most Gaming SystemsPrevent The Spread of Lice: Built with kid's health and safety in mind, these headphones are designed to combat the spread of head lice in schools. Each headphone comes in its own heavy-duty, write-on, moisture-resistant, reclosable bag. When sealed in the bag, lice are killed in 24-48 hours, without the use of chemicals.