CarCareTruth Score
Decent, but it's tough on the environment.
Priced as of June 17, 2026
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Prices may varyAbout this rating. This rating translates the product's published Safety Data Sheet (where applicable), the manufacturer's stated certifications (such as NIOSH approval or ANSI markings), and patterns across verified-purchase user reviews flagged by the retailer. It is informational — not a safety determination for any user, task, or environment. Before using this product, check the certification markings on the manufacturer's label and follow the manufacturer's fit, use, and care instructions. For workplace use, the employer's PPE program and OSHA hazard assessment under 29 CFR 1910.132 govern selection, not this page.
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This product ranks #6 of 8 in Hearing Protection.Three above it ↓
Last reviewed June 17, 2026
TL;DR The Mack's Ultra Soft Foam Earplugs carry NRR 33 on the label per the manufacturer's spec (the EPA mandatory label is not confirmed in listing photos, so the NRR is listed at 33 rather than certified). After OSHA derating ((33-7)/2 = 13 dB), an 85 dB orbital polisher drops to roughly 72 dB at the ear and a 100 dB force-air dryer to approximately 87 dB · adequate for typical detailing sessions. The slow-recovery "Comfy Cush" foam is notably comfortable through overnight wear. These are single-use plugs; they block conversation completely and are best suited to shop tasks where communication is not needed. Note: listed as an Amazon add-on item, which requires meeting Amazon's minimum cart threshold to purchase standalone.
The Mack's Ultra Soft is a single-use polyurethane foam earplug listed at NRR 33, sold in a 50-pair flip-top jar and made in the USA. The OSHA derating formula · (33-7)/2 = 13 dB · puts real-world protection in the same tier as other top-NRR single-use foam plugs. A 90 dB air compressor derates to approximately 77 dB at the ear; a force-air dryer at 100 dB derates to roughly 87 dB, above the action level but within the permissible exposure limit for the session lengths typical in car care. The tapered "Comfy Cush" foam profile delivers confirmed multi-hour and overnight comfort across a wide range of ear-canal sizes, with small-canal fit noted as a particular strength. Insertion follows the standard roll-and-insert technique: compress to a thin cylinder, straighten the ear canal, insert, and hold for a few seconds to allow expansion. Each pair is single-use.
Best for car-care owners who want a compact, affordable batch of foam earplugs for polisher, compressor, and force-air dryer work, and who prioritize comfort for longer sessions over reusability. The 50-pair jar travels well and is sized for a toolkit or shop drawer. Skip it if you need to hear conversation or equipment alerts during work · the passive NRR 33 design blocks all ambient sound and there is no fast-removal convenience. Skip it if single-use plastic waste is a concern · reusable silicone flanged plugs at similar NRR generate far less disposal volume per use. For sleep or concert use, lower-NRR plugs tuned for different frequency profiles are the better fit.
The Mack's Ultra Soft is a polyurethane foam plug with no SDS, no chemical emission in normal use, and no inhalation or contact exposure pathway. Health score is 9.5 (base); no natural latex is disclosed in the PU foam construction, no PFAS surface treatment is claimed, and no Prop 65 warning applies. On the environmental side, this is the single-use disposable sub-type: PU foam is not recyclable in any consumer-accessible stream, there is no manufacturer take-back program, and no recycled content is claimed. The 50-pair jar produces 50 pieces of plastic waste per pack; buyers for whom disposal volume matters should evaluate multi-use alternatives in the ppe-ears category.
Yes · this earplug pack is listed as an Amazon add-on item, which means it ships as part of a qualifying order that meets Amazon's minimum cart threshold. If you want to buy it standalone, it may require adding other items to your cart first to reach that threshold. This is an Amazon program restriction, not a product limitation.
NRR (Noise Reduction Rating) is the EPA-mandated protection figure on the package label. The standard OSHA derating formula (NRR - 7) divided by 2 gives the real-world effective reduction. For the Mack's Ultra Soft, that works out to (33-7)/2 = 13 dB. An orbital polisher running 85 dB at the operator's ear derates to roughly 72 dB · well below the OSHA 85 dB action level. A force-air car dryer running 100 dB derates to approximately 87 dB, above the action level but below the 90 dB permissible exposure limit for typical detailing session durations.
The manufacturer designates these as single-use disposable. The Amazon spec table lists 'Reusability: Disposable.' Some owners report getting several uses from each pair before discarding, but the product is not designed, tested, or rated for multi-use. PU foam accumulates ear wax and sweat in use; the manufacturer's hygiene and protection guidance treats each pair as one use. The 50-pair jar format reflects that expected use pattern.
No natural latex is disclosed in the Mack's Ultra Soft Foam Earplugs. The plug material is confirmed as polyurethane (PU) foam from the Amazon spec table ('Material Type: Polyurethane Foam') and the Important Information ingredients field ('polyurethane foam'). No natural rubber or latex component is disclosed anywhere in the manufacturer's materials or Amazon listing. No latex deduction applies to the health score.
The listed NRR 33 derates to about 13 dB of real-world reduction under the OSHA formula. A grinder running 105 dB lands at roughly 92 dB at the ear · above the OSHA 90 dB permissible exposure limit for 8-hour shifts. For brief grinder work in a typical home-detailer context these provide a meaningful reduction. For sustained grinder or impact wrench use at 105-110 dB, higher attenuation options or doubled protection (plugs plus earmuffs) are worth considering.
Marketing copy from Mack's, via Amazon. Not editorial.
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