Free Your Voice With Bubbles
Water bubbling technique is a type of semi-occluded vocal tract (SOVT) exercise that involves blowing bubbles through a straw submerged in water. It is highly recommended by medical professionals as a recovery and rehabilitation intervention for intricate muscles of the voice. The technique provides bio-visual feedback from the bubbles, allowing you to see your respiratory output and identify when there's either too much or too little effort applied.
Bubble Your Way To Vocal Freedom
Experience semi-occluded vocal tract (SOVT) exercises with bio-visual feedback through water bubbling.
Clean, Click, Sing.
Say goodbye to tedious cleaning routines! Our Resono Flex features an ingenious click mechanism that opens wide for easy cleaning and snaps securely shut for use. It's hygiene made simple.
Bend The Rules.
The Resono Flex is designed to be flexible, bendable, and perfectly adaptable to your unique vocal needs. Whether you're a beginner or a professional, the Flex moulds to your practice style.
Pro Ready, Beginner Friendly.
No prerequisites needed — you will literally see your airflow in the bubbles, feel the pressure waves on your lips, and hear the difference in your voice. It's vocal training made visual.
A Massage For Your Voice
With the Flex, you get alternating pressure waves from the bubbles, which creates an internal massage for your vocal folds. It's gentle, therapeutic, and incredibly effective for recovery.
Seal The Deal With Every Note
Our uniquely designed mouthpiece creates the perfect seal for your lips, ensuring you have total control over your airflow and resistance during every exercise.
Dive Deep into Vocal Perfection
Take the plunge with our Resono Flex's depth markings! Whether you're a shallow dipper or a deep diver, these handy markers help you track and replicate your ideal water depth for consistent results.
Why Resono Flex
Trusted By The Pros
Our vocal development tools are used by Singers and Professional Voice Users from over 40 countries around the globe, as well as by Broadway, West End, and Television/Film Stars, from shows like Les Miserable, Wicked, Hamilton, Frozen, Phantom of the Opera, Hadestown, Cabaret, and so many more.
Johnny Bishop
Alexia Khadime
Peter Jöback
Jon Robyns
Karl Queensborough
Sophie Evans
"I've been doing this before, during, and after the show. I've never lost my voice."
"The best warm up tool I've ever tried. It works instantly removing any sort of strain from the throat."
Frequently Asked Questions
Everything you need to know about the Resono Flex
The Resono Flex is made from FDA approved food-grade Silicone. It's flexible, durable, and designed to last. And it's dishwasher safe.
Dimensions: 300mm long, c.11mm inner diameter*, c. 20mm outer diameter*, with a 22mm built in mouth piece.
*The Resono Flex isn't perfectly round, so the inner and outer diameters are approximate.
UK Registered Design: #6266698.
We're committed to providing safe and reliable vocal training and rehabilitation tools. That's why each Resono Flex comes in a sterilized, individually sealed packet, ensuring maximum hygiene for your vocal training. Plus, our CE certification guarantees quality and compliance with international standards.
Sing with confidence knowing your voice is in good hands.
From the factory, the Flex will be shipped to you in its open position. This is normal. The Flex has been designed to be fully openable to allow you to clean the entire inside surface fully and prevent any buildup of nasty stuff.
The Flex takes only a few seconds to "click" back together. The action is a one-thumb-over, one-thumb-under kind of technique, ensuring to click the halves together to create a deal.
The process should only take 20-30 seconds. You can find full guides for this in the resources page if your account.


