HIRO Diapers
HIRO Diapers are the world’s first truly naturally degradable, high-performing diapers — soft on skin, tough on leaks, and powered by plastic-eating Mycelium to return to the Earth.
The HIRO Story
HIRO is on a mission to help solve the global plastic crisis, starting with the #1 household plastic waste item: diapers.
REDUCE. REGENERATE.
Our Founding Story
Mama Miki here. When I gave birth to my son Hiro Happy, I was over the moon. But with each diaper change, I felt an overwhelming wave of guilt, wondering where each diaper ended up. I learned that a typical diaper thrown into a landfill takes 400+ years to break down, and an average baby goes through ~6,000 diapers in before they reach childhood. I knew I had to make a change.
Why we started with diapers.
And why we’re working with nature instead of against it.
The History of hiro
After 4+ years of R&D and proof that Mycelium can break down plastics, we’re still just getting started. This is real progress, not perfection, and we’re committed to sharing every step. No greenwashing. No shortcuts. Just radical transparency and the honest, messy work of transforming waste into something life-giving.
This is the HIRO’s Journey, where the entire eco-system wins. (Yes, it’s possible.)
Only Unbleached Diaper
Softest TruCotton
No Chemical Blue Line (BTB)
Super Absorbent
DON’T Just TAKE IT FROM US
Hear What Real
Parents Have to Say
500+ 5-Star Reviews
“I feel so good that this diaper works and my baby’s poop is fertilizing Mycelium to help with the plastic problem! It feels good on every level.”
“10 out of 10 I choose HIRO Diaper on how it performed on my twins and for how good it makes me feel not to be generating double the waste.”
“As a master father of four kids,
this diaper is phenomenal — two blowouts and a pee and it worked beautifully. Plus, I feel so much safer for my children’s future.”
REDUCE. REGENERATE.
Our philosophy is to do our best to leave the world better than we received it
Our friendly Mycelium are trained experts: they’re safe to use, eliminate waste, and replenish soil to be healthy and nutrient-rich.
It All Began Millions of Years Ago (no, seriously.)
The hard part of trees, called “Lignin” evolves, but Mycelium haven’t yet caught up. When dead trees fall down, there is nothing to break them down, so they pile up for millennia.
It took Mycelium millions of years to evolve their enzymes to break down lignin (the hard part of the tree), finally balancing nature’s carbon cycle. (Spoiler: the same enzymes help break down plastic today!)
Plastic is invented to replace ivory and save the elephants. The world cheers, until plastic becomes a whole new environmental problem.
Disposable diapers hit the market, delivering convenience but creating a planet-sized problem. One diaper = 400+ years to break down. Each baby goes through up to 6,000 diapers in their lifetime.
Plastic-eating Mycelium are discovered in the Amazon rainforest. Nature’s cleanup crew is ready and is studied in labs.
The founding vision is called forth by 2-year-old son, Hiro Happy.
HIRO Technologies is born. Early experiments begin in Pakistan and Mexico with leading local Mycologists.
HIRO Labs opens in Austin with an all-female science team.
First field experiments launch (yes, thousands of poop buckets were involved).
1 million data points collected, first patents filed and we identify the most thoughtful way to safely bring plastic-eating Mycelium to the people.
The first diaper to come with friendly Mycelium to help break it down in the landfill.
THE NOT-SO-DISTANT FUTURE
Our launch is only the beginning. We have
big goals for where we are going:
