It's my edited texture for your sim's groin/butt, to improve the appearance of the body when using CC skins or transparent clothing (like jockstraps or see-through underwear). The SimplePenis zip file contains an optional 'Skin Texture' add-on. texture overlays (for use with tanning or CC skins) The base file for each of these types includes: There are four anatomy types - penis, vagina, chest, breast. I recommend only using SimpleGens because it will be updated going forward. You CAN use both RealGens and SimpleGens in your game at the same time without conflict or errors. RealGens is deprecated and unsupported (outside of major necessary updates). The SimpleGens mods continue to receive upgrades and updates. SimpleGens is a more recent set of anatomy mods I released last year. RealGens is a family of anatomy mods (penises, vaginas, etc) I released a few years ago. This post is intended as an FAQ/download directory/info repository for anyone using my mods, whether you're new or you've been here since the beginning.