1. LAYER BEFORE BED
Pop two Numi sheets on the bed for easy cleanups.
The 3AM Setup
Purchase 2 sheets and enjoy 10% off.
Purchase 3 sheets and receive 15% off.
Organic waterproof bedding that doesn't feel waterproof.
Organic cotton.
Built-in waterproof protection.
No crinkle. No sweaty plastic mattress protector. No 3am mattress scrubbing.
BECAUSE ACCIDENTS DON’T HAPPEN CONVENIENTLY
THE 3AM GAME CHANGER.
2. OOPS, IT HAPPENS
Vomit, wees, spills — it’s all part of the job.
3. STRIP & GO
Take off the top sheet and there’s another clean waterproof sheet ready to go.
NO MATTRESS PROTECTOR. NO SCRUBBING. NO STRESS.
Waterproof Cot Sheets
Frequently Asked Questions
Are Numi sheets actually waterproof?
Yes. Numi sheets have a built-in Cotton Jersey TPU waterproof layer that protects the mattress from accidents, spills, and night-time surprises, while still remaining breathable and comfortable to sleep on - with ZERO crunch.
Why did we choose a TPU lining?
We chose TPU lining because it’s soft, flexible and fully waterproof — without the stiff, plasticky feel of traditional waterproof materials.
Importantly, TPU allows air to pass through while blocking liquids, which helps maintain breathability and is considered a safer option for sleep environments.
Are Numi sheets GOTS certified organic?
Our sheets are made using GOTS certified organic cotton, meaning the cotton itself meets strict environmental and ethical standards.
We chose these materials to ensure our sheets are safe, gentle, and responsibly made for little sleepers.
About Us
Numi was created by two mums on Sydney’s Northern Beaches, designing the baby essentials we couldn’t find — practical, beautiful and thoughtfully made. Each piece begins as a hand-painted design, inspired by the little things that shape childhood.
Thoughtfully made for little ones (and their parents)
Built-in waterproof protection
300 thread count organic cotton
Breathable inner TPU layer
No plastic feel or crinkle
Deep fit with strong elastic
Made to last, wash after wash
