AoYuki Flex Cube – Refill Foam Insert
Adaptive Loft Comfort · Cooling Foam Refill · Everyday Rest
A thoughtfully engineered refill made with AoYuKi Flex Cube Memory Foam, certified safe and designed to restore neck alignment, cooling comfort, and personalised support in your favourite pillows and bolsters — night after night.
Each cube is cut for clean, even support, allowing airflow through the gaps between cubes while maintaining balanced lift. The result is a refill that keeps pillows feeling cooler, lighter, and more naturally aligned — never lumpy, never stuffy.
Cooling Memory Foam Pillow Refill | AoYuKi Flex Cube | 100% Pure Gel-Infused Memory Foam | CertiPUR-US® · OEKO-TEX® · GRS Certified | For Pillows, Bolsters & DIY Support
AoYuki Flex Cube Memory Foam is a 100% pure cooling gel–infused memory foam refill for pillows and bolsters.
Even-cut cubes give adjustable height, better airflow and long-lasting support – without polyester scraps, clumping or flattening.
Material That’s Better Than Ordinary Fillers
AoYuki Flex uses only high-density, cooling gel–infused memory foam cubes – no polyester, no scrap foam. The even-cut cubes move and mold around your head and neck for consistent support that doesn’t collapse.
Adjustable Loft for Any Pillow or Bolster
Add or remove cubes to fine-tune height and firmness. Perfect as a pillow refill, bolster refill or DIY cushion filling – including DakiFlex, KumoFlex and other adjustable pillows.
Cooler, Cleaner Sleep
The open-cell structure and cube shape help air flow easily, so less heat and sweat get trapped inside your pillow. The foam is hypoallergenic and certified safe (CertiPUR-US®, OEKO-TEX®, GRS), making it suitable for children and sensitive sleepers.
Durable, Worth the Upgrade
Unlike cheap mixed foam that clumps and flattens in weeks, AoYuki Flex cubes bounce back night after night. One refill pack helps you revive old pillows and extend their life, instead of buying new ones.
Why AoYuki Flex Cube Memory Foam?
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100% pure cooling gel memory foam cubes – no polyester, no scrap foam
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Adjustable loft – add/remove cubes to match your comfort
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Better airflow for cooler, less sweaty nights
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Certified safe & hypoallergenic – CertiPUR-US®, OEKO-TEX®, GRS
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Fits DakiFlex, KumoFlex & most pillow/bolster shells
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Long-lasting support that resists clumping and flattening
FEEL THE DIFFERENCE
Is This What Your Nights Feel Like?
You’re not “just a bad sleeper”. Most nights go wrong because the pillow filling is wrong — too flat, too hot, or not safe enough. AoYuki Flex Cube Memory Foam is designed to fix these problems from the inside.
Neck or Shoulder Stiffness
Waking up with tightness, aches, or a heavy head? Flat or lumpy filling pushes your neck out of alignment and makes muscles work all night instead of resting.
Hot or Sweaty Sleep
Flipping to the “cool side” all night? Cheap mixed foam and polyester fillers trap heat, leaving your head warm, damp, and restless.
One-Height Pillows Don’t Work
You change position at night — but your pillow doesn’t. Fixed-height pillows are either too high, too low, or go flat in weeks, so you never feel fully supported.
Skin Safety Matters (Kids Included)
You want materials that feel gentle, breathable, and certified safe for little ones — not mystery foam that smells strong or sheds dust.
Trusted comfort materials designed for everyday sleep, cooling support, and long-lasting use.
What You’ll Notice After Switching to AoYuKi Flex
What You’ll Notice After Switching to AoYuKi Flex
- Your pillow feels even and steady – no more bumpy, saggy spots.
- You stop waking up to “fix” your pillow – cubes stay supportive all night.
- Your neck and shoulders feel less tight – alignment feels natural, not forced.
- Sleep feels cooler and fresher – airflow between cubes instead of trapped heat.
- You wake up lighter, not stiff or annoyed – more “ready for the day”, less “recovering from sleep”.
FEEL THE DIFFERENCE
Thoughtfully Chosen Materials
100% High-Density Memory Foam Cubes
Moves with your body without collapsing into lumps
Cooling Gel Infused Structure
Helps reduce heat retention so sleep feels less sticky
Cube Shape = Natural Air Pockets
Improves airflow and reduces trapped humidity in warm rooms
Breathable Rope Storage Bag
Store extra foam neatly for future adjustments (no mess)
Trusted comfort materials designed for everyday sleep, cooling support, and long-lasting use.
FEEL THE DIFFERENCE
Designed to Stay Supportive — Not Just Day 1
AoYuki Flex is engineered to keep your pillow cool, even and supportive — not flat and lumpy after a few weeks.
Clump-Resistant Fill
Cubes stay separated better than shredded scraps, so support feels more even across the pillow.
Adjustable Loft Control
Add or remove cubes anytime to keep the same comfort as seasons, body or sleep style change.
Cooling Airflow Structure
Air gaps between cubes help reduce heat build-up in humid bedrooms.
Trusted comfort materials designed for everyday sleep, cooling support, and long-lasting use.
Cool, breathable comfort for warm, humid nights.
Designed for Singapore Climate
- AoYuki Flex cubes stay airy, not stuffy, even in fan rooms or air-con off nights.
- Cube gaps let heat and humidity escape instead of trapping it around your neck.
- Wake up feeling less “sticky” and more refreshed, even in our weather.
Certified foam you can trust close to skin.
Thoughtfully Sourced & Tested
- 100% pure cooling gel memory foam cubes — no polyester scraps, no mystery fillers.
- Independently tested to CertiPUR-US®, OEKO-TEX® and GRS standards for safety and quality.
- Low-odor, hypoallergenic choice for sensitive skin and family use.
One refill that supports many daily moments.
Made for Everyday Wellbeing
- Use AoYuki Flex to refresh old pillows, fill bolsters, or upgrade adjustable designs.
- Supports better sleep, pregnancy rest, sofa lounging and recovery nights.
- Instead of buying new pillows, refill and fine-tune what your family already loves.
FEEL THE DIFFERENCE
Sleep Should Be Safe.
Materials tested for skin contact — every night.
CertiPUR-US®
Foam made without harmful chemicals. Low VOC emissions for indoor air quality.
OEKO-TEX®
Fabric tested against harmful substances. Safe for prolonged skin contact.
GRS Certified
Responsible sourcing of recycled materials. Better for you — and better for the environment.
Trusted comfort materials designed for everyday sleep, cooling support, and long-lasting use.
Specifications & Compatibility
Everything you need to know — and how to use it with your pillows & bolsters.
| Pack Size | Filling & Structure | Certifications | Works With | Packaging |
|---|---|---|---|---|
| 500g refill pack (approx. 1× full refill or multiple top-ups) | 100% pure AoYuKi Flex Cube Memory Foam (cooling gel-infused). Open-cell, cube shape design for airflow & adjustable loft | CertiPUR-US® • OEKO-TEX® • GRS. Low-odor, made without harmful chemicals | DakiFlex Adjustable Bolster | KumoFlex Adjustable Pillow | Other zip-open pillows & bolsters | DIY cushions / backrests / leg support pillows | Breathable rope bag |
Care, Safety & Quality
- Do not wash or soak AoYuki Flex cubes in water.
- Spot-clean only if needed; let foam and rope bag dry completely in the shade.
- Air pillow / bolster and foam occasionally in a cool, shaded area.
- Keep away from direct heat, heaters, or strong sunlight.
- Fluff and gently shake the pillow to redistribute cubes and restore loft – avoid pulling cubes apart by hand.
- Unzip the inner liner of your pillow, bolster, or cushion.
- Start with less foam than you think, then add cubes gradually until the height feels right.
- After adding or removing cubes, shake and press the pillow to spread them evenly.
- Store any extra cubes in the breathable rope bag – keep zipped or tied to prevent spills.
- Re-adjust loft anytime if your sleeping position or comfort needs change.
- Intended for adults and teens; not recommended for unsupervised infants or toddlers.
- Foam cubes are not toys – keep away from young children and pets who may chew or swallow them.
- Do not open, cut, or burn the foam cubes.
- If you have neck, back, or medical conditions, adjust height slowly and consult a healthcare professional if unsure.
- Stop using and contact us if you notice any unusual smell, irritation, or damage.
- Filling: 100% pure cooling gel-infused memory foam cubes (no polyester fibers, no scrap-foam mix).
- Foam tested to CertiPUR-US® standards for content, emissions, and durability.
- Key materials OEKO-TEX® tested (where applicable) for skin-contact safety.
- Components include GRS-certified recycled content (where applicable).
For Little Sleepers
Everyday Comfort, Refilled
Soft Yet Properly Supportive
A small refill that changes how your whole bed feels.
AoYuKi FLEX CUBE
Restore the comfort, support, and coolness your pillow has been missing — with 100% pure memory foam cubes designed to adapt to you.