When you first invest in diaper business, you may ask samples from different suppliers. But the quality of diapers are not as obvious as clothes, which can be tested simply by touching it. So how to check quality of diapers after receiving samples? Breathability Bad breathable diapers may cause rashes. To check breathability, you need to prepare(here we use Besuper Newborn Baby Diapers to demonstrate): 1 piece of diaper 2 transparent cups 1 heater Procedures: 1. Wrap a disposable diaper tightly on a cup with hot water, and buckle another cup on top of the diaper. 2. Heat the bottom cup for 1 minute, and check the steam in the upper cup. More steam in the upper cup, the better the breathability of the diaper.