E-A-R UltraFit Ear Tracer EarplugsConforms to oval shape of ear. No rolling or touching plug portion during insertion. Patented flange design gives most comfortable fit of any reusable earplug. Washable, promotes worker hygiene. Metal detectable plug and cord. Color: Blue; Noise Reduction Rate (NRR): 25 dB; Packing Type: Poly Bag; Quantity: 100 pair per box; Type: Corded; Weight: 0.02 lb.