Using Frostfall with your mod will still be optional it will not make your mod dependent on Frostfall. It will “just work” and you only have to do it once, ever.
This works on Frostfall 3.3.1 or newer, and works on every version of Skyrim on every platform, including on the Xbox One, and regardless of whether or not the user is using SkyUI or SKSE.
If you are an armor or clothing mod author, you can give your users out-of-the-box Warmth and Coverage for your gear by following the steps below.
