Including the triple flange eartips but excluding the cable connector it's roughly 25mm (1 inch)

How do these deal with noisy/loud environments?

These are perfect for noisy environments, you won't be able to hear any outside noise. I was at an indoor Netball games and could not hear any of the high pitched whistles being blown at all. These IEMS are really good.

Are these geared more towards professionals? Im a casual listener, but I'm looking to upgrade to something more serious than regular cheap earbuds.

Speaking as a professional, yeah they have a pretty neutral and accurate sound with very good isolation, which I greatly appreciate because I can't stand exaggerated consumer-oriented sound signatures. It sounds better than anything else remotely close to this price. However, to achieve this great isolation and accuracy, you have to use those 3-flange tips and insert them properly (very deeply-as deep as they'll go). It takes a bit getting used to and may present a comfort issue for some, but for me, it wasn't a big deal and I got used to it quickly with no discomfort.

Are the foam or silicone flange tips more effective at noise isolation?

I find the triple flange silicone tips better in my ears. But I have narrower than normal ear canals so the foam does not fit very well.

Etymotic Er2xr Extended Response Earphone Multicolored

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Description

🎶 Elevate your audio game—hear every detail, feel every beat.

CUSTOM FIT COMFORT - Choose from an assortment of ear tips for a snug, secure fit that stays comfortable all day.
DURABLE METAL DESIGN - Sleek anodized metal earpieces combine style with long-lasting durability for the modern professional.
EFFORTLESS MAINTENANCE - Detachable cable means quick replacements and hassle-free upgrades—never miss a beat.
PRECISION AUDIO MASTERY - Experience crystal-clear sound with enhanced extended bass that brings your music to life.
UNMATCHED NOISE ISOLATION - Block out distractions with over 35 dB of external noise isolation—your personal sound bubble.

The Etymotic ER2XR Extended Response Earphones deliver true high-accuracy sound with enhanced bass, featuring over 35 dB of noise isolation and a customizable fit with multiple ear tips. Crafted with durable anodized metal earpieces and a detachable cable, these in-ear headphones are designed for professionals seeking premium sound clarity and comfort during music, travel, or work.

Specifications

ASIN	B07NSL5XS5
Additional Features	Detachable Cable, Noise Isolation, User Replaceable ACCU-Filters
Age Range Description	Adult
Antenna Location	Music
Audio Driver Type	Dynamic Driver
Best Sellers Rank	#65,634 in Electronics ( See Top 100 in Electronics ) #2,960 in Earbud & In-Ear Headphones
Bluetooth Version	5.0
Brand Name	Etymotic
Built-In Media	Detachable cable, Assortment of ear tips
Cable Features	Detachable
Carrying Case Color	Black
Color	Multicolored
Compatible Devices	Cellphones
Connectivity Technology	Bluetooth
Control Method	Push Button
Control Type	Media Control
Customer Package Type	Standard Packaging
Customer Reviews	4.1 4.1 out of 5 stars (787)
Earpiece Shape	Angular or rounded tip for deep insertion
Enclosure Material	Metal
Frequency Range	20 Hz – 16 kHz
Global Trade Identification Number	00846430002203
Headphone Folding Features	In Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	In Ear
Impedance	15 Ohms
Is Autographed	No
Is Electric	No
Item Type Name	Etymotic Research ER2XR Extended Respone In-Ear Earphones
Item Weight	0.19 Kilograms
Manufacturer	Etymotic Research
Model Name	ER2XR
Model Number	ER2XR
Noise Control	Sound Isolation
Number of Items	1
Series Number	2
Specific Uses For Product	Music, Travel
Style Name	Boom microphone stand with a telescoping boom arm
UPC	846430002203
Unit Count	1.0 Count
Warranty Description	2 Years
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth

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Bs.3380

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Etymotic ER2XR Extended Response Earphone, Multicolored

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