We can never quite believe that something this slim can be quite so thirsty, making them an ideal choice for heavy wetters and night-time use. They're so absorbent that when one of Baba+Boo’s product testers tried these overnight, she panicked that her baby was dehydrated because the insert was so dry! (He wasn't.) And because they're made from hemp and organic cotton, we're loving their eco-credentials too. As quick to dry as bamboo (although slower than charcoal) these are also convenient if you're washing a mix of bamboo and hemp.