Top sheet: soft and breathable non woven, enable fluid pass through quickly and no flow back to keep surface dry and comfortable. 2. Absorbent Core: fluff pulp mixed with super absorbent polymer to absorb the fluid efficiently to prevent leakage. 3. Leak guard: with SMS water proof nonwoven to prevent the water leak out. 4. Back sheet: Pe film or cloth like to prevent leakage. 5. wetness indicator: fades out when diaper is wet ,it reminds time to change the diapers.