I actually use nappy sacks when we are out (I don't have a PUL bag) & that holds in everything just fine (smells, mess, etc). The only problem is when you forget to take them out of the nappy bag when you get home - I had some live in there for a few days before I remember that they need washing .

I have found having a mixture of hemp & bamboo better than having all hemp. My DS is a big wetter & hemp don't last for very long - so if we are going to the shops etc he is in bamboo.