Many people wear 3m 1110 Disposable Ear Plug which are used to sleep in addition to protecting their ears from loud noises. For light sleepers or those who reside in a noisy neighborhood, this can make all the difference in the world. A soft, cotton cord is included to assist prevent earplug loss. It is tapered to fit comfortably in the ear canal. For optimum hearing protection and comfort, use soft, corded foam earplugs that adapt to the particular shape of each ear.