What is the difference between this and the deluxe version?

Hi Michelle, thank you for your enquiry, The Deluxe has a removable cotton cover that is washable, This Innerspring Mattress is designed for Export size cots and will fit most US Cots where the Basic does not have a cover and fits most UK sized cots. I 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.