The Junior Joy mesh laundry bags fit perfectly into Junior Joy 16l buckets. The Baba+Boo bags are rather bigger. The little mesh bags are very small - suitable for putting wet wipes or breast pads in.
You simply lift the whole bag containing the dirty nappies out of the bucket and pop it all in the washing machine, leaving the drawstring top open so that the nappies can fall out and wash effectively. It saves handling all the smelly separate bits of dirty nappies!