I'm another Monkeyfoot fan too. The XL ones easily hold 2-3days worth. They're zippered too. I've got all mine from Lisa at Nappy Garden too http://nappygarden.co.uk/index.php?main ... v0tqo47i35
& her CS is FAB!!. She always posts things straightaway so if you order an instock one tonight & choose 1st class post you'll probably have it on thurs.
I ordered my 1st XL one from Lisa & it was for a weekend away. I ordered it wed night & got it in time.
There are also instock ones at http://www.bespokebabyroom.co.uk/oursho ... -Bags.html
I haven't ordered from them (yet, I love the pink & red apples at BB) so can't vouch for their cs but I bet if you email them & explain...