Howard Leight X-Treme Ear Plugs
Every Howard Leight X-Treme ear plug we stock: 7 styles, 7 part numbers; NRR 32 dB. Ratings below are as published by PIP for each style. Ships in 1–2 business days; most orders arrive in 3–7 business days.
X-Treme styles
Source: PIP Rich Product Data, October 2026.
X-Treme ratings by style
| Style | NRR | SNR | Type | Material | Box count | Sold by |
|---|---|---|---|---|---|---|
| HL400-XTR-INTRO-AM | 32 | 36 | Uncorded earplug | Polyurethane Foam | 400 | Case |
| HL400-XTR-30-AM | 32 | 36 | Corded earplug | Polyurethane Foam | 400 | Case |
| HL400-XTR-REFILL | 32 | 36 | Uncorded earplug | Polyurethane Foam | 400 | Case |
| XTR-30-REFILL | 32 | 36 | Corded earplug | Polyurethane Foam | 400 | Case |
| XTR-1 | 32 | 36 | Uncorded earplug | Polyurethane Foam | 200 | Case |
| XTR-LS4-REFILL | 32 | 36 | Uncorded earplug | Polyurethane Foam | 200 | Case |
| XTR-30 | 32 | 36 | Corded earplug | Polyurethane Foam | 100 | Case |
Source: PIP Rich Product Data, October 2026; PIP, "Ear Muffs" brochure (May 2023, page 1: What is NRR?). Ratings are as published by the manufacturer, not a recommendation for any task.
X-Treme literature
PIP publishes "Howard Leight Hearing Conservation Guide" (PDF) for this series.
Guides: what NRR means · how to insert ear plugs · reusable vs disposable · when hearing protection is required · NRR vs SNR · every ear plug and ear muff by NRR.
Howard Leight X-Treme Ear Plugs questions
What are Howard Leight X-Treme ear plugs made of? PU foam, as PIP lists them.
What NRR do Howard Leight X-Treme ear plugs have? NRR 32 dB (EPA label, ANSI S3.19-1974) across the 7 styles, as PIP publishes it.
Which Howard Leight X-Treme styles do you stock? HL400-XTR-INTRO-AM, HL400-XTR-30-AM, HL400-XTR-REFILL, XTR-30-REFILL, XTR-1, XTR-LS4-REFILL and XTR-30.
How are Howard Leight X-Treme ear plugs sold? By the case; the part number on each style page is what you order.