1. Hand feeling difference The most direct way is to touch them with your hands. Hot air nonwoven diapers will be softer and more comfortable to touch, while spunbond nonwoven will be harder to touch. 2. Gently tug When you get the diaper, gently pull the surface layer of the diaper, the hot air nonwoven can easily pull out the silk, if it is spunbond nonwoven, it is difficult to pull out the whole silk.