NUMI combines a fitted sheet and waterproof mattress protection in one practical layer. Your child sleeps on soft organic cotton, while a hidden waterproof layer underneath helps protect the mattress from wees, spills and everyday accidents. There’s no need to add a separate traditional mattress protector beneath the sheet, so making the bed takes one less step. It’s an easy-care alternative for busy family bedrooms.

NUMI’s built-in waterproof layer is designed to help shield the mattress from everyday wetness, and the protection extends down the sides of the fitted sheet for added coverage. As with any bedding, check that the sheet is correctly fitted to your mattress and follow the care instructions to look after its performance. These waterproof bed sheets make a practical everyday choice without promising protection beyond their intended use.

Waterproof fitted sheets can make toilet training, bedwetting and unexpected accidents less stressful by helping keep the mattress protected and making clean-up simpler. Try NUMI’s two-sheet setup: layer two NUMI sheets before bed, then if the top one gets wet overnight, remove it and there’s already a clean waterproof sheet underneath. You’ll thank us at 3am. It’s a handy routine for toddlers and older kids alike.

NUMI was specifically created to combine a fitted sheet with waterproof mattress protection, so you don’t need a separate fitted sheet and traditional mattress protector underneath. The waterproof layer is built into the sheet itself. That makes it a straightforward mattress protector alternative for families who want fewer layers and an easier bed change.

They’re designed to feel like beautiful everyday bedding, not a traditional plastic-feeling waterproof protector. The sleep surface is soft 300 thread count GOTS-certified organic cotton, paired with a breathable TPU waterproof layer beneath. The construction has a no-crinkle feel, so your little one can settle into comfortable bedding while the mattress has an added layer of protection.

NUMI currently offers waterproof cot sheets and waterproof single bed sheets. Before ordering, measure your mattress and check the Size Guide to make sure you choose the best fit. Explore Cot Sheets or Single Bed Sheets to find the right option for your child’s bed.

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 look after the fabric and the built-in waterproof layer, so your sheets are ready for the next bedtime or unexpected spill.

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. They’re an easy way to add practical protection to a coordinated toddler bedding setup. Browse the Waterproof Pillowcases collection to see the available styles.

A standard setup often means putting on a mattress protector and then a separate fitted sheet. NUMI combines both functions into one layer, which means fewer layers, a simpler bed-making routine and quicker changes when accidents happen. You also get the feel of cotton bedding and NUMI’s original hand-painted prints, rather than a hidden protector under plain sheets.

Every NUMI print begins as original artwork created by founders Billie and Colby on Sydney’s Northern Beaches. Their hand-painted designs bring a personal, playful feel to practical kids bedding in Australia. Each print is made to feel special in your child’s room, while the bedding itself is thoughtfully designed for the everyday realities of family life.