What's the difference between this er20xs model and etymotic's cheaper "high fidelity" option?

The noise attenuation is the same. Both are "high fidelity" earplugs in that they lower the decibels to a safe level while preserving clarity.Differences--ER20XS can change out the eartips. ER20XS has an option for foam eartips. ER20XS stem is shorter and more discreet. It fits more comfortably underneath hats, helmets and other headgear. Etymotic Research

I see most reviews used these for concerts/music... How do/would you think they would perform with something such as shooting firearms?

I would not recommend them for shooting a firearm. These earplugs are great at filtering the sound and reducing overall noise by about 20-30 decibels. This is not nearly enough for the bang of a firearm.

Will these stay inserted in the ear if the person is performing/fast moving or will the combination of sweat and movement cause them to fall out?

Let's start with comfort. They are not as comfortable as poly plugs- but, you will get used to them. Watch GP riders before a race. All use urethane plugs.But, I do like them and continue to use them- usually. They stay in a bit better and reduce the noise at lease as well. You own a BMW, you can afford to try them. You might prefer them. Buy a pair.

What's the difference between universal fit and standard/large?

universal fit gives you 3 different replaceable fittings and is the safest choice if you want a more exact fit. Standard is what fits most people. Large that simply for those that have large ear openings.

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ETYMOTIC RESEARCH ER20XS-SMF-P Premium Ear Plugs, 1 Pair (x 1), Transparent

ETYMOTIC RESEARCH ER20XS-SMF-P Premium Ear Plugs, 1 Pair (x 1), Transparent

Product ID: 727958441

Details

Brand
Etymotic
Color
Clear Frosted
Material
Plastic
Size
1 pair (x 1)
Style
No Cord

👂Low-profile, flat fit design

🔇20 dB noise reduction

🔍Translucent, discreet look

€ 76.31

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Description

🔕 Hear the world, not the noise—silence never looked this sleek!

READY TO GO - Includes neck cord and case for easy storage and on-the-go use—never lose your peace of mind.
INVISIBLE COMFORT - Translucent design blends seamlessly with your ear for discreet, confident wear anywhere.
SLEEK STEMLESS FIT - No protruding parts—wear comfortably under hats, helmets, or on stage without distraction.
BUILT FOR PROFESSIONALS - Trusted by musicians and industrial workers alike for reliable hearing protection in loud environments.
PRECISION NOISE CONTROL - Blocks 20 dB of harmful noise while preserving sound clarity—hear everything, just quieter.

The ETYMOTIC RESEARCH ER20XS-SMF-P Premium Ear Plugs deliver professional-grade 20 dB noise reduction with a translucent, low-profile design that stays discreet and comfortable. Ideal for musicians, construction workers, and anyone exposed to loud environments, these reusable earplugs fit flat against the ear, allowing use under hats and helmets. Included accessories like a neck cord and case make them perfect for daily protection without sacrificing sound clarity.

Specifications

ASIN	B00RM6Q9XW
ASIN	B00RM6Q9XW
Amazon Bestseller	#86,189 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #500 in Earplugs
Brand Name	Etymotic
Color	Clear, Frosted Eartips (Translucent)
Customer Reviews	4.2 4.2 out of 5 stars (4,365)
Global Trade Identification Number	00084643001747, 00846430001749
Is Discontinued By Manufacturer	No
Item Dimensions	10 x 19 x 10 mm
Item Weight	0.4 Ounces
Item model number	ER20XS-SMF-P
Manufacturer	ETYMOTIC
Manufacturer	ETYMOTIC
Manufacturer Part Number	ER20XS-SMF-P
Material Type	Plastic
Model Number	ER20XS-SMF-P
Number of Items	1
Number of Pieces	2
Product Dimensions	1.02 x 1.91 x 1.02 cm; 11.34 g
Product Style	No Cord
Reusability	Reusable
Size	1 pair (x 1)
Specific Uses For Product	Hearing Protection
UPC	846430001749 084643001747
Unit Count	1 Count

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€ 76.31

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

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TrustScore 4.5 | 7,300+ reviews

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