Howard Leight Earplugs: Why Highest NRR Isn't the Best Choice

Most safety managers I talk to ask for one thing: the highest NRR number on the shelf. I think that's a mistake. I've spent four years reviewing PPE shipments for a manufacturing and logistics network, and the only hearing protection that works is the one people actually wear—correctly, all shift. An NRR 33 earplug inside a pocket protects exactly nobody.

I'm not an audiologist. I'm a quality/compliance manager. I review roughly 200 unique PPE line items a year, and in 2024 I rejected about 12% of first deliveries for spec problems—wrong sizing, missing labels, certification paperwork that didn't match. Hearing protection is the category where I get the most pushback from vendors because everyone assumes 33 is always better than 32. It isn't.

What Changed My Mind

In March 2022, a routine audit changed how I think about NRR. We had a worker at a packing station wearing Howard Leight Max Lite earplugs—NRR 33. The noise level was around 94 dBA, so the spec looked right. But he'd been jamming them in without rolling the foam properly. A fit test showed almost no attenuation in one ear. None of this was the earplug's fault. The product was fine. The training was the problem. But it made me realize that the number on the box was the least useful piece of information we had.

Argument One: NRR Is a Lab Number, Not a Worker Number

It's tempting to think you can compare NRR like you compare shoe sizes. You can't. The NRR is measured under the ANSI S3.19 test method, and the EPA requires that number on the package. But the test uses trained subjects who insert the protector exactly as intended. Your afternoon crew in a hurry? Not the same situation. OSHA and NIOSH have both documented that real-world attenuation often falls below lab ratings. That's why fit testing and training matter, and it's why the 'one number to rule them all' mindset is outdated.

So when someone asks whether Howard Leight Laser Lite earplugs at NRR 32 are "worse" than Max Lite at NRR 33, I tell them to stop looking at one decibel. The real difference is whether the worker gets a consistent seal. That difference is often 10 dB or more.

Argument Two: Comfort Is a Compliance Issue

When I get asked about Howard Leight Max Lite earplugs reviews, I usually say this: the Max Lite is a serious foam plug with an NRR 33 rating. It expands slowly, seals firmly, and holds up for a full shift if rolled correctly. But "firmly" is exactly why some workers don't like it. They feel pressure in their ear canals after a few hours, so they take it out for "a minute" that turns into half an hour.

The Howard Leight Laser Lite earplugs are NRR 32—one point lower—but they use a slightly softer foam that expands quickly and feels a little less intrusive. In our in-house trials, the Laser Lite gets better wear-time scores for steady background noise. Which should you buy? It depends. If your people leave Max Lite in all shift and pass fit testing, keep it. If they're fidgeting by mid-afternoon, try Laser Lite. The 1 dB difference is less important than the three hours of unprotected exposure you're fixing.

Argument Three: Context—and Other PPE—Matters More

This is where I get accused of overcomplicating things. But PPE doesn't work in a vacuum. I see purchase orders with Carhartt coveralls—insulated models, winter gloves, and a box of earplugs as an afterthought. Then January arrives, and the earmuffs don't seal over knit hats, or a worker can't handle foam plugs with thick gloves. Hearing protection isn't the problem. The combination is.

If you're ordering Carhartt coveralls, insulated or not, think about how your team will handle earplugs in the cold. Maybe you need a storage pouch near the work area, or a banded protector that's easier to take on and off. The point is to test the full kit together, not just the earplug.

There's also the situational awareness issue. Passive foam blocks steady noise, but it also blocks speech and warning signals. For intermittent impact noise—hammering, gunfire, or a maintenance crew near a compressor—I understand why many people choose electronic muffs. Walker hearing protection is a well-known example: the electronics compress loud sounds while letting low-level speech through. That's a different category from foam, and it's genuinely better in some scenarios. For continuous high-level industrial noise, though, I'd still pick a properly fit foam plug over a battery-powered option. This isn't a criticism of Walker—it's about matching the protector to the exposure pattern.

Why Would a Smoke Detector Keep Beeping? Same Reason Earplugs End Up in Pockets

Someone asked me recently, "Why does my smoke detector keep beeping?" The bad answer is to take the battery out and ignore it. The good answer is to figure out whether it's a low battery, dust, or an end-of-life warning. Hearing protection is the same. If workers aren't wearing earplugs, don't assume they're lazy. Look for the signal. Maybe it's comfort. Maybe it's training. Maybe it's incompatible gloves or the fact that the plugs are stored too far from the work area. The beep is information, not a judgment.

What About "Best"?

Let me answer the objection I always get: "Shouldn't I buy the highest NRR to be safe?" If you're choosing between two well-made protectors from a reputable brand—Howard Leight is a Honeywell brand—both will protect if worn correctly. Higher NRR only matters when the exposure is severe, such as over 100 dBA, and even then you should verify individual fit, not just the label. I do not mean NRR is useless. It's a starting point. But starting isn't deciding.

Honest Limitations

I should be honest about my sample. My experience is based on reviewing PPE for manufacturing, warehousing, and light industrial maintenance—not construction, mining, or entertainment. If you're in one of those sectors, your fit and comfort findings might be different. Ask your own workers, run a trial, and do hearing protection fit testing if you can. That gives you better data than any spec sheet.

My Bottom Line

I recommend Howard Leight Max Lite for workers who need a high-NRR foam plug and are okay with a firmer fit. I recommend the Howard Leight Laser Lite (NRR 32) for anyone who finds Max Lite too stiff. And I recommend neither if the real issue is a training gap, a compatibility problem, or the wrong type of protector for the noise pattern.

Stop asking which earplug has the highest number. Start asking what your workers will actually wear correctly. That'll do more for their hearing than one decibel on a box.