Noir and Dark is primarily known for creating adult-themed (NSFW) custom content for The Sims 4. Their default replacements often include anatomical details that are not present in the vanilla game.
Since it is a "Default Replacement," you should only have one mod that overrides the same EA item at a time. If you have another default underwear mod installed, they will conflict.
The item you're referring to is a for The Sims 4 by the creator Noir and Dark .
Table_title: Back to parent: TS4 Table_content: header: | Sub-folders: | | | row: | Sub-folders:: [Noir and Dark Sims 4] Sex Toy - Sim File Share The Sims 4: No Mosaic/Censor Mod - SimsVIP
You can typically find these files archived on platforms like Sim File Share or via the creator's social media and Patreon pages. How to Use It
It replaces the default meshes or textures for the underwear and swimwear that appear in Create-A-Sim (CAS) and when a Sim is in their "undressed" state.