2). PVC CORD OR COTTOM CORD in verious color.
3). Slow rebounded; SNR: 33dB.
4). Comfortable, effiective, lightweight; Dermatologically, safeplugs are non-irritating.
5). Smooth surface.
6). Normal packing: PP bag, paper box, plastic bottle, plastic box.
7). OEM service: Printing logo into cases, make the plugs' colors according to your request.