A stalwart of the booster world, one to use again and again. Bamboo is super absorbent, and these don't take too long to dry. These come as standard with your Baba + Boo nappies, but it can be handy to have some spares around.
Always prewash your nappies and inserts before the first use, to build absorbency. If you don't, liquid will just run off the surface of the fabric, causing leaks.