Material: nylon Size: Customized Certificate: ROHS, ISO9001 Usage: filling gaps, preventing vibration, energy absorbing Foam ... for dust-proofing======================================= Material PU,PE, EVA Size CustomizedCertificateROHS,ISO9001 Application Protecting from dust, energy absorbing, cushion, filling gaps ... international couriers.Details in pictures: Dust-proofing Fabric mesh for loudspeaker