Do you have a fav park-touring backpack?

[BWVDenise]

I'm just wondering if some are better than others!
We ususally pack water, juice, snacks, hand gel, sunscreen, rain ponchos, etc. for the 5 of us. Is there a backpack that works better than the kind that is just one large compartment with a smaller outer compartment?

 

[MomE@Home]

We use our DS's L.L. Bean school backback. It has a large compartment , sm. outer compartment with pockets & a key clip and two bottle holders. It worked very well for our family of five(including our 18 om. old DD's stuff-diapers,juice,extra clothes ect..). We hung it on our DD's stroller while walking around and took turns carrying it onto attractions & shows. I try not to go too nuts with what I pack in it-just the basics.