The bag holds 3-4 diapers (diapers shown in a size 2 & 4), a packet of travel wipes, and even a small tube of diaper cream or hand sanitizer. I have even had as many as 6-8 in mine!!
When they are done you roll it up, tie it up & throw it in your bag! They keep the crayons in the right place & they don't end up in the bottom of your bag!