... bell shape;Adjust the color according to pantone number;Soft PU material, rebound slowly and low pressure to ear canal; ... Packaging, polybag, plastic box, blister cases.PU foam earplugs : Iterm NO.GJ-01 ShapeBullet-shapeSize1.3*2 ... red, etcRebound time5-25 secondsCertificateCE EN352-2CordNylon, PVC Red, yellow, blue PU or Silicon Bullet Low profile Industrial Ear Plugs GJ-01