OK, so this is a game-changer. I'll admit that there were times before acquiring the Willow Nappy Bag Backpack ($160, originally $200) when my husband and I woefully found ourselves out of the house with our son but sadly without a portable changing pad. This made for some very interesting changes in the bathroom of our pediatrician's waiting room. I love that this bag has a (detachable and washable) changing pad built in so that I have one less thing I need to worry about grabbing before leaving the house. This feature would also be well used in the back of a car during a road trip, in the park while on a picnic, etc.