1.)ABS shell, adjustable headband for safety helmet
2.)With soft acoustic foam-filled cushion provides a good seal for protection against harmful noise.
3.)Color: Red, orange, yellow, blue are available.
4.)NRR:27dB
5.)Packing: White box, 50pcs/carton,71x31x65cm
6.)MOQ: 1000pcs
7.)Delivery time: 30days after receiving deposit