NUMI brings a fitted sheet and waterproof mattress protection together in one practical layer. Your child sleeps on soft organic cotton, while a discreet waterproof layer underneath helps protect the mattress from wees, spills and everyday accidents. It works as a mattress protector alternative, so you do not need to put a separate traditional protector beneath it. That means one less layer to make the bed and one simple sheet to wash.

NUMI waterproof bed sheets are made to help keep moisture from reaching the mattress during everyday use. The waterproof layer also extends down the sides of the fitted sheet, adding coverage beyond the sleeping surface. As with any bedding, fit the sheet securely and follow the care instructions to maintain its performance; no fabric can promise protection in every situation or against every volume of liquid.

Waterproof sheets for kids can make nighttime toilet training, bedwetting and unexpected accidents less stressful by helping protect the mattress and making clean-up easier. Try NUMI’s two-sheet setup: layer two NUMI sheets before bed. If the top one gets wet overnight, remove it and there is already a clean waterproof sheet underneath. No need to remake the bed from scratch in the middle of the night. You'll thank us at 3am.

NUMI was specifically created to remove the need for a separate fitted sheet and mattress protector. Waterproof protection is built into the sheet, so it performs both jobs in one layer. It is a simpler approach to waterproof mattress protection for cot and single beds, with fewer pieces to put on, take off and launder.

They are designed to feel like lovely everyday bedding, not a plastic-feeling protector. The sleep surface is soft 300 thread count GOTS-certified organic cotton, paired with a breathable TPU waterproof layer underneath. The result is a comfortable, no-crinkle feel for little sleepers, while still providing a practical barrier between spills and the mattress. A thoughtful choice for toddler bedding and everyday family life.

NUMI currently offers Cot and Single waterproof fitted sheets, including waterproof cot sheets and waterproof single bed sheets. Before ordering, measure your mattress and check the Size Guide so you can choose a secure fit. Explore Cot Sheets or browse Single Bed Sheets. NUMI makes kids bedding in Australia with practical family needs in mind.

Wash below 40°C, then line dry in the shade or tumble dry on low. Do not bleach, soak, dry clean or iron. Following these simple care instructions helps keep your sheets feeling good and the waterproof layer in its best condition.

Yes. NUMI waterproof pillowcases are designed to help protect pillows from dribbles, spills, sweat and nighttime mess, while still looking and feeling like normal bedding. Pair one with your child’s sheets for a coordinated, easy-care bed. Shop waterproof pillowcases.

It is a two-in-one design. Instead of putting on a mattress protector and then adding another fitted sheet over the top, NUMI combines both functions in one layer. Fewer layers mean easier bed changes and less washing to manage. And unlike plain, utilitarian protectors, NUMI sheets feature original hand-painted prints made to bring a little personality to the room.

Every NUMI print begins as original artwork created by founders Billie and Colby on Sydney’s Northern Beaches. The hand-painted designs are then turned into distinctive bedding prints, bringing a little colour and story to children’s rooms. NUMI’s organic cotton fitted sheets and waterproof bedding pair that considered design with the practical protection busy families need.