Airy channels around waist gather. Expel moisture from between the skin and the gathers. Sweat-prone baby's back is also kept dry! The entire nappy is breathable, not letting pee leak and only releasing stuffiness. Skin stays dry even after baby has been actively moving. Stretches 2.5 times more*, which makes nappy changes easier! Does not tighten too much! With fluffy fit design around the belly. Proprietary design supports snugly at the hips and helps nappy stay in place without tightening too much. Also, thoroughly protects against leaks, allowing you to have a piece of mind. * Compared to before the nappy is stretched (surveyed by Kao)