this pack contains every single adoptable base i did prior to october 2020! that is 40+ bases, not all of which are shown in this thumbnail. full disclosure, some are repeated in there and its messy, but it's a lot of bases for not a lot of money! all of them have psd files, some have psd + clip, some include transparent pngs, as well. clip studio and sai both can open and use psd files.