产品描述：
Helmet Mounted Ear Defenders
With ABS cups and PVC cushions. The positionable ear cups are designed to fit unnoticeably beneath the hard hat. For use with JSP-957 Mark 2 & 3 helmets. Conform with PR EN 352-3 : 1993.
Tested in accordance with EN 352-3:2002 & EN 24869-1.
Helmet not included.
H31, M23, L16, SNR26.
Surefit(TM) Thruxton