These are a set of Black Desert Online armor mods for the Valkyrie.
To use them correctly you need to be using Abropo's armor mod method, which you can learn how to set up here:
Abropo's BDO armor mods | Undertow
Inserting the mods into the game is done using Ray Wing's Resorep texture replacer which you can learn how to set up here:
[Tool] Resorep - DirectX 11 texture replacer | Undertow
Extract the contents of the download to your Resorep "modded" folder.
The basebody nudes are available as a separate download
BDO Basebody Nudes if you don't already have them.