What is the different between this footmuff and the urban sleek footmuff?

Hi Hiedi, thank you for your enquiry, the Thule Sleek Footmuff has a large zip-opening to adjust temperature and to easily access your child, it also can be used as a seat liner on warmer days by detaching the front and it has protective lining protects the interior from dirty shoes. Thule Sport does not have these features. We hope this helps.  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.