This set of overlays is designed to help correct issues with CC default skin textures/skin overlays.
All of my content is Maxis match, meant to work with default Maxis content (or my own edits of that content). But there are a wide variety of skin textures and overlays out there, which means that some of my anatomy content - like SimpleBreasts or SimpleChests - won't always match those custom skins perfectly.
These torso overlays are set up to work as a "middle layer" between your sim's skin and the Simple anatomy. The overlays have no nipples, just flat chest texture designed to closely match the default Maxis skins while seamlessly blending to your CC skin. This should eliminate issues with "double nipples" or odd texturing around the upper torso area.
Each overlay comes in 5 swatches, with increasing levels of coverage across the upper torso. There are separate overlays for breasts and chests, but each overlay is available to sims of either gender and frame so you can mix and match as you need.
NOTES:
These overlays work best with CC set up the way Maxis creates skin details.
If you use my torso overlays and see no difference when pairing them with CC skins, it may be the creator has set up their content to work differently (I'm trying to avoid an overly technical explanation here, but if you want more details, let me know.)
Also, if you're using my default skin textures or my full-body skin overlays, you shouldn't need to use these overlays.