The specially shaped pod is the same soft, yellow foam material as a traditional plug, but it seeks its own sealing point within the ear and instantly seals as the slow recovery foam provides a custom fit, eliminating excess pressure on the ear canal. Express plugs can be reused since your hands never touch the pod plug, no rolling needed. Soft, pliable grip makes insertion and removal easy. No cord, 100 pair per box. NRR 25 db.