Think Tank Designs — Port Neches, Texas

DrumShield — Your Eardrums. Protected.
Permanent Mold Custom Earplugs

Effective enough to actually protect you. Comfortable enough that you'll actually wear it.

Order Here OR Buy on Amazon Wholesale Inquiries
FDA-Compliant Silicone
🔬
Audiologist Validated
Under 10-Minute Custom Fit
90-Day Money Back
15+
Years Field Tested
DrumShield custom molded earplugs — finished product DrumShield complete kit in jar packaging DrumShield kit flat lay — all components

Not A Foam
Earplug.

DrumShield uses FDA-compliant platinum-cured silicone compound to create a permanent custom mold of your exact ear canal — in under 10 minutes, at home, without an audiologist. The mold cures hard, lasts indefinitely, and fits only your ear.

This is not a soft one-time-use putty. Not a generic tip that approximates a seal. A permanent mold. The difference is everything.

  • True custom fit — molds to your exact ear canal shape
  • The only product of its kind that includes a practice amount — succeed on the first try
  • Reflective paracord tether with stainless cord anchors — never lost
  • Tunable — trim to dial in your preferred noise reduction level
  • FDA-compliant platinum-cured silicone compound
  • Hypoallergenic and non-toxic
  • Reusable, washable, built to last
  • QR code links to setup video — support at every step
  • Purpose-selected packaging doubles as carry case

Why This Exists

About ten years ago, I took my father to a rifle range for his first shooting experience. He picked up a pair of foam earplugs from the counter — the kind that comes in a jar by the register. He inserted them the way anyone would who had never been shown how. I didn't know that it wasn't common knowledge that they back out and constantly need to be reinserted. It didn't even occur to me that he had never used earplugs before. They looked right from the outside. They weren't.

He had no frame of reference for the pain he was feeling. He assumed the discomfort was just part of it — that shooting was supposed to be unpleasant. He kept shooting. By the time we left, the damage was done.

The hearing loss was severe, permanent, and formally diagnosed. He wears hearing aids today.

I was wearing DrumShields. I wasn't affected.

The difference wasn't the foam. It was the fit.

"DrumShield started as a way to solve a personal inconvenience. That day at the range made clear it was something else entirely — an obvious necessity that too many people didn't have access to."

— Franco Valdivieso, Founder · Think Tank Designs · Port Neches, Texas

Six Steps.
One Perfect Fit.

01
Practice First

Open the practice bags and mix the compound. Get comfortable with the texture and timing before touching your ear bags. No other DIY earplug kit includes this.

02
Mix Ear 1

Tear open Ear 1 bags — one yellow, one gray. Mix until completely uniform with no streaks. You have approximately 3 minutes before the compound begins to cure.

03
Insert & Shape

Roll into a snake as thick as a pencil. Insert gently into your ear canal. Work compound behind the crus helix into the cymba conchae — this creates the mechanical lock.

04
Cure

Remain still for 8–10 minutes. Test with your fingernail — if the mark springs back, you're ready to remove. The earplug continues to fully cure for 15–20 minutes after removal — do not begin Ear 2 until Ear 1 is fully cured.

05
Remove

Grip the cord at the base and work loose with a gentle circular motion. Pull your ear back and up if you feel resistance. Never pull straight out.

06
Repeat

Repeat steps 2 through 5 for Ear 2. You now have a permanent custom earplug set that fits only your ears — and will continue to fit them every time.

The Data.
Not Just Claims.

DrumShield was clinically tested by a licensed audiologist using calibrated equipment under controlled conditions. Both ears were tested simultaneously — once without protection, once with custom-molded DrumShield earplugs. The results speak for themselves.

Test Results Comparison
Measurement No Protection With DrumShield
Word Recognition Score 100% 80%
Presentation Level 50 dBHL 50 dBHL
Speech Recognition Threshold (SRT) -10 dB 35 dB
~45 dB
Measured Attenuation — SRT Shift

Standard foam earplugs rated NRR 29–33 dB.

The Speech Recognition Threshold is the minimum volume at which speech becomes intelligible. Without protection, speech was understood at -10 dB — extremely sensitive hearing. With DrumShield custom molds, that threshold rose to 35 dB. The 45 dB gap between those two numbers is the measured attenuation — how much sound the earplugs block.

For context: highway motorcycle wind noise measures approximately 90 dB. At 45 dB of attenuation, DrumShield would reduce that to approximately 45 dB — well within safe extended exposure limits. Standard foam earplugs are rated NRR 29–33 dB. DrumShield appears to exceed that.

Brytni Borel, Au.D.
Licensed Audiologist — License #80387
Orange County Audiology & Hearing Aids
1025 Texas Ave, Suite B — Bridge City, TX 77611
Visit Date: 04/14/2026
Test conducted using Madsen Astera audiometer. Calibrated 07/16/2024. Reliability: Excellent. Test method: Conventional. Transducer: Inserts.

How We
Compare.

Feature DrumShield Radians DIY ISOtunes BT Custom IEM (Lab)
Price $29.99 $30+ (3 separate purchases) $99–130 $300–500+
True Custom Fit
Permanent Mold (Cures Hard) ✗ Stays soft ✓ (material varies)
Practice Amount Included N/A N/A
Retention System Reflective paracord + stainless anchors Sold separately None None
Clinically Validated* NRR rating only NRR rating only
Tunable Attenuation
Audiologist Visit Required ✗ No No No ✓ Yes
90-Day Money Back
Carry Case Included Sold separately Varies by model

* NRR (Noise Reduction Rating) certifications are conducted under controlled laboratory conditions and do not reflect real-world performance for DIY custom-molded earplugs. See disclaimer below for full explanation.

Retail &
Wholesale.

Wholesale — Ranges, Shops, Distributors
Contact for Pricing

Whether you're a range owner, gun shop, tool truck operator, or industrial supplier — reach out directly for wholesale pricing and terms.

Wholesale sample available with valid resale certificate.

info@mydrumshield.com Wholesale Inquiry
90
Day Money Back Guarantee

If DrumShield doesn't work for you — for any reason — contact us within 90 days of purchase for a full refund. No questions asked. We stand behind this product because we use it ourselves.

"What does the customer actually need to succeed? That question drove every decision in this kit — pre-measured compound amounts so you never have to estimate or separate material yourself, twelve versions of the instructions before they were right, purpose-designed labeling, a practice amount, stainless cord anchors, audiologist validation, a carry case that's there when you need it.

Every one of those decisions added cost and complexity. Every one was made anyway. Countless units given away to friends, family, and acquaintances to get real feedback on the instructions, the labeling, and the packaging — before a single unit was sold.

We will continue to improve and refine based on your feedback. Without the customer, we don't exist — and unlike too many companies that seem to have forgotten or simply stopped caring, we never will.

The profit will come once we've earned your trust."

— Franco Valdivieso, Founder

Wholesale &
General Inquiries.

Whether you're a range owner, tool truck operator, shop buyer, or individual customer — we want to hear from you. Wholesale orders ship within 48 hours of confirmation.

Wholesale sample available with valid resale certificate. Contact info@mydrumshield.com to request.

📍
Port Neches, Texas
🏭
Think Tank Designs