This anti-Noise reusable earplug is made of foam, measure 0.87″ x 0.47″, and come in a square PP plastic pocket-sized case that can be taken anywhere. This ear plugs are especially useful to protect from loud noises or for a sound night of sleep. Two pieces keep in a reusable clear plastic case. Custom logo can be imprinted on the case. Orders of 2000 pieces or greater are eligible for sea shipping. 100% guarantee for quality.