PolyStash v1.5 is a release file of the Minecraft resource pack PolyStash v1.13 - MC1.20.4, made for Minecraft 1.17.1, 1.17, 1.17-Snapshot. It was published on July 27, 2021 and is 6 MB in size. For the full description, screenshots and every other version, visit the PolyStash v1.13 - MC1.20.4 resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.