Baby diapers are designed to keep infants dry, comfortable, and protected, with core features focusing on skin-friendliness, leak-proof performance, absorption capacity, breathability, and safety. Key details are as follows:

1. Skin-Friendly Core Material: Gentle on Delicate Skin

Surface Layer: Mostly made of soft cotton-like non-woven fabric (e.g., spunlace non-woven) or hypoallergenic materials. It’s smooth, non-irritating, and quickly guides urine into the absorbent core to avoid sticking to the baby’s skin.

Absorbent Core: The core component, typically a blend of fluff pulp + high-molecular water-absorbing resin (SAP). SAP can instantly lock in urine (absorption capacity up to 30-50 times its own weight) and prevent reverse osmosis, keeping the surface dry.

Back Sheet: Uses breathable waterproof PE film or microporous breathable material. It blocks urine leakage while allowing air circulation, reducing stuffiness and the risk of diaper rash.

2. Leak-Proof Design: Fits Active Babies

3D Stereo Leg Guards: Elastic, raised leg cuffs (1-2cm height) that fit the baby’s thigh curve. They block urine from leaking sideways when the baby crawls or walks.

Elastic Waistband: Wide, stretchable waistbands (usually 5-8cm wide) that adapt to the baby’s abdomen. They prevent leakage from the waist and avoid勒痕 (constriction marks) even when the baby moves.

Ergonomic Cutting: Curved hip and crotch design that fits the baby’s body shape, avoiding bunching or shifting during activities.

3. Strong Absorption & Dryness

Instant Absorption: The multi-layer absorbent structure absorbs urine in 1-2 seconds, preventing overflow even during large-volume urination (e.g., night-time).

Long-Lasting Dryness: SAP forms a stable gel after absorbing urine, with almost no reverse osmosis. Pressing the diaper lightly won’t cause urine to seep back, keeping the baby’s skin dry for 4-8 hours.

4. Safety & Hygiene: Suitable for Sensitive Skin

Non-Toxic Ingredients: Formaldehyde-free, fluorescent agent-free, and fragrance-free. Most products pass international safety certifications (e.g., FDA, CE ISO ) to avoid skin allergies.

Optional Soothing Additives: Some high-end diapers add aloe vera extract or vitamin E to the surface layer, which soothes mild skin irritation and protects the baby’s delicate skin.

Hygienic Packaging: Individual or sealed pack packaging, which is clean and convenient for carrying during outings.

5. User-Friendly Details

Wetness Indicator: A color-changing strip (usually blue) on the front of the diaper. It turns dark when wet, helping parents quickly check if a diaper change is needed without disturbing the baby.

Adjustable Fasteners: Soft magic tape or hook-and-loop fasteners that can be repositioned 3-5 times. They allow easy adjustment of the diaper’s tightness, suitable for babies of different sizes.

Ultra-Thin & Lightweight: Most diapers are 2-5mm thick (before absorption), lightweight and not bulky. They won’t restrict the baby’s movement or affect their sleeping posture.