Large Stretchable Headphone Covers - Black - Bag of 100 - fits Earmuff-style headphones Large Stretchable Covers fit most earmuff-style headphones 2 1/2-inches (2.5") to 5-inches (5") in diameter. For headphones with an earpiece smaller than 2 1/2", try our Small Stretchable Headphone Covers. Makes it safe and hygienic to share headphones between many different people without sharing bacteria, germs, head lice, hair products and viruses Great for offices, computer labs, libraries, hospitals, and more. Each bag contains 100 disposable covers. Protect headphone users from being exposed to material on the headphones from prior users Blocks contaminants but allows audio to pass through. Replace the covers between individual users to freshen the headphones so they are clean and will not pose a hazard from sharing viruses, bacteria, germs and head lice.