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Quad
4 pack
- Free delivery on subscriptions
- Free sample each month
- Pause or cancel anytime
- 365 day free returns
In stock. Next day delivery available.
Healf Zone members get free next day delivery on all orders.
Product description
Key Benefits
- Offers 20dB sound reduction with balanced clarity.
- Uses 100% lab-grown mycelium and contains no plastics.
- Moulds naturally to the ear for long-lasting comfort.
- Fully home-compostable and free from plastics.
GOB's Quad is a truly compostable earplug made entirely from lab-grown mycelium, offering comfort, clarity, and peace of mind without harming the planet. With 20dB of consistent, balanced sound reduction, it softens disruptive noise across all frequencies—whether in hotel rooms, flights, gyms, or at live shows—without muffling important sounds.
Quad’s mycelium foam shapes to the ear like memory foam, ensuring a secure, pain-free fit that stays in place. Unlike synthetic plugs, Quad breaks down completely after use, returning nutrients to the soil with zero microplastics or toxins. Quad delivers chemical-free, body-safe hearing protection that respects both personal health and environmental impact.
Why GOB is Healf
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Suggested use
Place the earplug gently at the entrance of your ear canal, keeping it aligned for a natural fit. Do not pinch or roll.
STEP 02: Place Finger On Outer End
Hold the earplug steady, pressing your thumb against the flat edge to guide it into place.
STEP 03: Push Until Secure
Press forward until the earplug sits flush with your ear, creating a comfortable and secure fit.
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Frequently asked questions
How do we curate our products?
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
Do you have resources on how to enhance wellbeing?
The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
How can I find out more about the ingredients in a product?
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.

Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.











































































