SmithOutlet 30 Pack Silicon Tip Earbud Headphones/Earphones Pack of 30 Earbud Headphones Each Headphone individually packaged and sealed Silicon tips helps to reduce ambient noise 3.5 MM Plug works with iPods, iPhones, iPads, Chromebooks, Tablets, Computers, CD Players, Fitness and Audio Equipment Great for Classroom Testing, Students, Schools, Hospitals, Hotels, Gyms and more