wax ear plug Sleeping and Swiming earplug 1. Many kind of shapes and colors 2. good appearance & competitive price Round wax ... , Noise reduce environment.Under ANSI and CE standard.1. Material: made of synthetic wax formula, non toxic. 2. Cord available3. SNR: 22dB4 ... .7. Use when travelling, learning, sleeping, swimming, ectOEM welcome earplug made of synthetic wax