Beitais Fetal Sebum Kids Underwear Boys Soft Moisturizing Breathable Boxer Briefs Baby Cotton Antibacterial 4-Pack

Soft, skin-friendly, weakly acidic fabric that mimics natural baby skin protection

Durable fiber structure resistant to 3680 friction cycles and 300 washes without degradation

Temperature stability from -10°C to 43°C

Chemical-free original yarn, no surface coating or dyeing

Ergonomic U-shaped 3D crotch design for comfort and growth space

Anti-pinch hip design to prevent discomfort during movement

Seamless one-piece cutting to eliminate side seams and reduce skin irritation

Four-way stretch fabric suitable for all body types

Soft elastic edging to prevent rolling and pilling

Fluorescent agent and formaldehyde free, meets national A-class maternal and infant textile standards

Comfortable, breathable, and durable for daily wear

Blue, Gray, Green, Yellow

Animal Forest pattern

International design awards including US Good Design Award, French Design Award, London Design Award, MUSE Design Award, New York Product Award

National patents and biomimetic fiber invention patents pending

Recognized as No.1 in national sales for infant sleep sacks for 3 consecutive years

Trusted by global medical and research institutions including Harvard, Stanford, UBC, and British Royal Family endorsement

Certified safe by authoritative international bodies

Product Identity Card included

Leading brand in infant and children's sleepwear and clothing in China

Over 71.6 million users with 98% positive user feedback

Developed with 30 years of cell biomimicry technology and 40 years of clinical experience

Endorsed by parenting experts and featured on CCTV parenting programs