Moldex Corded Semi-Reusable Twisters® Earplugs have a multi-curved stem that rotates, providing a custom fit. Soft foam pods allow for a comfortable, snug seal. These plugs are semi-reusable, they can be used for several days before disposal. Fitted with a large handle for easy insertion and removal. The cord can be attached at any desired length, for universal adjustment. Has a signal to noise ratio (SNR) of 34 dB.