March 26, 2026 2 min read
Earplugs might not be the first thing that comes to mind when you think about sustainability. They're small, easy to use, and often forgotten about the moment we take them out. But what if this everyday essential was quietly becoming part of a much bigger solution?
Each year, around 40 billion plastic foam earplugs are produced globally (yikes)! While they help protect our hearing at concerts, focus at work or sleep when the neighbour’s dog decides 2am is party time, they also open the door to an exciting opportunity to rethink how even the smallest products are made.
Most traditional earplugs are made from materials like PVC and polyurethane, which are fossil-based plastics. These materials have been widely used for years, but they contribute to pollution from the moment they are created. To put it into perspective, producing these earplugs each year requires an estimated 1.3 million barrels of oil, highlighting just how resource-intensive this tiny product can be.

These same earplugs often contain additives like phthalates, which have been linked to endocrine disruption, infertility, and developmental issues. Research has found phthalate exposure in 98 percent of the U.S. population, showing just how widespread these chemicals are.
The good news? Innovation is stepping in, and it's looking very different from what we're used to.
Enter mycelium, the root-like structure of mushrooms. It might sound unexpected, but it is proving to be one of the most exciting natural materials in sustainable design.
GOB (you might have recently seen them on Shark Tank) has created earplugs made entirely from mycelium, offering a renewable, non-toxic alternative to plastic foam. Even better, once you are done with them, they can break down in around 45 days, returning nutrients back to the soil.
Sustainability is only part of the story. GOB earplugs are also designed to work with your body, not against it. The natural structure of mycelium allows the earplugs to gently mould to your ear, creating a secure and comfortable fit whilst providing up to 20 decibels of noise reduction.
Unlike traditional foam options that can muffle certain frequencies, mycelium earplugs reduce sound more evenly, so you still feel connected to your surroundings, just with the volume turned down slightly (wining)!

What makes this story so exciting is not just the product itself, but what it represents. It shows that even the smallest, most overlooked items in our daily lives can be redesigned with people and the planet in mind.
Switching from plastic foam earplugs to a compostable alternative might seem small, but when you consider the billions that are used each year, it becomes something much bigger. With solutions like GOB, we're moving toward a future where convenience and sustainability are no longer at odds. Instead, they work together to create products that feel good to use and even better to dispose. And that's exactly the kind of progress we love to see.
With Love,
Ellie xo
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