Softness is easy to feel on the first touch.
But for baby sleepwear, the real question is what happens after everyday wear: crawling, stretching, cuddling, washing, and wearing again.
That is why CloudyCoo submitted our bamboo viscose rib fabric for independent pilling resistance testing by Bureau Veritas. The tested pink and blue rib fabrics both received a Grade 3.5 rating under the ASTM D3512-22 random tumble pilling test, meeting the report requirement of minimum Grade 3.5.
For parents, this means our fabric was reviewed not only for softness, but also for surface performance after friction.
Quick Answer: CloudyCoo’s pink and blue K5410 1×1 rib fabrics were tested by Bureau Veritas using ASTM D3512-22 for 30 minutes. Both received Grade 3.5 and met the minimum requirement stated in the report
Test Report Summary
| Report Item | Details |
|---|---|
| Testing Organization | Bureau Veritas |
| Lab No. | (6626)239-0235 |
| Product / Sample | Fabric |
| Style No. | K5410 1*1 Rib |
| Colors Tested | A: Pink, B: Blue |
| End Use | Children’s Sleepwear |
| Submitted Fiber Content | 94% Bamboo Viscose, 6% Spandex |
| Test Method | ASTM D3512-22 Random Tumble Pilling |
| Test Condition | 30 minutes |
| Requirement | Minimum Grade 3.5 |
| Result for Pink Fabric | Grade 3.5 / PASS |
| Result for Blue Fabric | Grade 3.5 / PASS |
| Overall Rating | PASS |
| Date Out | September 1, 2026 |
What Is Pilling?
Pilling happens when tiny fiber balls form on the surface of fabric after friction, wear, or washing.
For baby pajamas, pilling can matter because the fabric sits close to delicate skin. Too much pilling may make sleepwear look older, feel less smooth, or seem less premium over time.
That is why pilling resistance is an important part of how we think about bamboo viscose baby sleepwear.
What the Test Result Means
The Bureau Veritas report used the ASTM D3512-22 random tumble pilling method.
In the report’s rating guide:
| Grade | Meaning |
|---|---|
| Grade 5 | No pilling |
| Grade 4 | Slight pilling |
| Grade 3 | Moderate pilling |
| Grade 2 | Severe pilling |
| Grade 1 | Very severe pilling |
CloudyCoo’s tested pink and blue rib fabrics both received Grade 3.5, meeting the required minimum grade.
This means the tested fabric reached the passing threshold for pilling resistance under the report conditions.
Why This Matters for Baby Sleepwear
Baby pajamas are not worn gently.
They go through bedtime, naps, tummy time, stroller rides, feeding, crawling, stretching, and frequent washing. A baby pajama needs to feel soft, but it also needs to stay comfortable through real family life.
CloudyCoo Zippies are made with a bamboo viscose blend designed for softness and movement:
94% bamboo viscose and 6% spandex
The bamboo viscose gives the fabric its smooth hand feel. The spandex adds gentle stretch, helping the garment move with babies as they sleep, kick, crawl, and grow.
The pilling resistance test gives parents another layer of information beyond touch: it helps show how the tested fabric surface performed after controlled friction testing.
Designed for Everyday Baby Life
CloudyCoo baby pajamas are made for the small moments parents live every day: late-night changes, sleepy cuddles, first rolls, crawling practice, and morning stretches.
A good baby pajama should feel soft when it is new. A better one should continue to feel comfortable after real use.
By testing pilling resistance, CloudyCoo adds one more check behind the softness.
It is part of how we build bamboo viscose baby sleepwear that feels gentle, looks thoughtful, and is made for everyday family life.
Learn more about [CloudyCoo bamboo baby pajamas], explore [Our Fabric], or read about our [independent baby sleepwear laboratory testing]
FAQ
Did CloudyCoo test for pilling resistance?
Yes. CloudyCoo’s bamboo viscose rib fabric was tested by Bureau Veritas for pilling resistance.
What test method was used?
The report lists ASTM D3512-22 Random Tumble Pilling with a 30-minute test condition.
What result did the fabric receive?
Both tested colors, pink and blue, received Grade 3.5.
Did the fabric pass the test?
Yes. The report requirement was minimum Grade 3.5, and both tested fabrics reached Grade 3.5.
What does Grade 3.5 mean?
The report rating guide lists Grade 5 as no pilling, Grade 4 as slight pilling, Grade 3 as moderate pilling, Grade 2 as severe pilling, and Grade 1 as very severe pilling. Grade 3.5 sits between slight and moderate pilling and meets the report requirement.
Why does pilling resistance matter for baby pajamas?
Baby pajamas are worn and washed often. Pilling resistance helps support a smoother fabric surface and a better long-term wearing experience.
What fabric was tested?
The submitted fiber content was 94% bamboo viscose and 6% spandex.
