This thing holds everything I needed and so much more.
It is not even full and look at all the stuff I managed to cram in this.
The list includes a 20 oz Coke, bib, spoon, Gerber 2nd food tub, bottle, blanket, hat, 3 toys, 2 pacifiers, and even my phone and keys. (not shown but also included 3 size 2 diapers and small pack of wipes)
It fit on everything I could think of.
Z's bike trailer
According to the website you can also attach this to the seat in your car (I Haven't tried that yet)
I recieved this as a free trial but I am definitely going to recommend this organizer to all of my friends and not just those with small children either. This will work great later in the car to hold 3DSs and all the stuff that goes with them.