... design and multi-flanged stem comforms to ear shape and ear piece retention.Attenuation filter in 23db for ... Soft PU material, rebound slowly and low pressure to ear canal;Packaging, polybag, plastic box, blister cases. ... foam earplugs : Iterm NO.GJ-01 ShapeBullet-shapeSize1.3*2.4cm MaterialFoam Colouryellow, pink, green, red, etcRebound ... PU or Silicon Bullet Low profile Industrial Ear Plugs GJ-01