Uppababy Changing Backpack Uppababy Changing Backpacks are a seamless addition to your Uppababy stroller. Designed with leather accents and in Uppababy stroller fashions, the Changing Backpacks are an easy way to bring along all your little one's must-have's. The adjustable straps allow for a perfect fit for all parents, and can be attached directly to the stroller for additional convenience. Included with your Changing Backpack is a changing pad and insulated bottle holder.