just wondering how easily this packs down to fit under a stroller

Hi Lucy, the material is easy to wipe down, it will probably be best to try the bag instore with your stroller as it does differ depending on what kind of stroller you have? We hope this helps. ?For further information on this or any of our other products available, if you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder. Here you can find contact details for your nearest Baby On The Move Store where one of our team experts will be happy to assist you in your product search and help answer any further questions you may have. We hope this has helped with your query.