I think its very hard to visualize a new product with very little, if any info, there has been only a minimal description. For all we know it could just be a bag of depends and a pack of markers at this point.
I leave you the possibility to express your imagination of what can change on the product, incidentally it can also influence my choices on the modifications, if you do not indicate your wishes i can not guessed them
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The pull-ups can be in a second time but it requires a lot more R & D and the price is likely to be much more expensive than a disposable diaper in the classic format