Nothing is sliding off of your shoulders! Or smacking you in the side constantly! Your hands are free! You never have to hang it on the hook or put it on the floor in a public restroom! And you can hold so! Many! Things!

I bought doughnuts and a drink from Dunkin the other day, which filled my tiny baby hands to the brim, and at first I was like, "oh no, I'm gonna need to grab stuff and hold my doughnut bag with my teeth or something"- BUT WAIT! I have something better than teeth! And into the backpack purse my doughnuts went, where they stayed warm and safe through my adventures until I returned home.