Unbleached cotton retains its natural waxes and oils, which makes it naturally hydrophobic and ultra-soft against baby’s skin. It skips harsh processing and showcases the true texture of nature—safer for baby, gentler on the planet.

We intentionally removed the wetness indicator (aka the blue line) because it contains Bromothymol Blue, a chemical we choose not to include. It was invented to drive consumption, not because parents asked for it. HIRO Diapers are free from this and other unnecessary additives. Read more in The Truth about Diapers.

Yes. HIRO Diapers use less plastic without sacrificing performance. In third-party lab tests, our diapers matched or outperformed leading natural brands in absorbency, dryness, and speed—keeping babies dry for up to 12 hours, day or night.

Nope! While foodgrade safe, the SuperHIRO fungi only come into play after diaper disposal. You drop a HIRO Pouch into the soiled diaper—never in direct contact with baby—and that’s when the fungi get to work breaking down waste.

HIRO Diapers are hypoallergenic, dermatologist-tested, and made with super soft, breathable materials that keep baby’s skin dry and comfortable. They’re free from harsh chemicals, chlorine, bromothymol blue wetness indicator, fragrances, lotions, and dyes—all common irritants that can lead to diaper rash.

Yes. HIRO Diapers go beyond the industry standard and are made with absolutely no chlorine bleaching. Our cotton and pulp are processed using totally chlorine-free (TCF) and oxygen-based methods.

Yes. The fungi used in HIRO Pouches are organic, culinary-grade, non-GMO, and never come into contact with your baby. The pouch stays sealed inside the diaper until it’s discarded, where it activates safely in landfill conditions—not in your nursery.

Fungi are nature’s most powerful decomposers. Our proprietary MycoDigestible™ technology uses a blend of shelf-stable fungi that activate when exposed to moisture. These fungi release enzymes that break down plastic at a molecular level, transforming it into environmentally safe matter—no microplastics, no greenwashing.