Tri-Flange Earplugs, Corded, 26 dB NRR, Yellow/Orange, 100 PairsMore convenient and easier to use than disposable foam earplugs, Tri Flange Earplugs feature a flexible, thermoplastic ear tip with a three flange design to ensure both an excellent ear canal seal and a comfortable fit. Contoured livewire stems allow you to insert and remove your earplugs without touching the tips, so the tips and your ears remain clean, even if your hands or gloves aren't. Pre molded earplug tip and stem are washable and reusable