Installing

Choose which hat you want to replace by opening the appropriate folder. Extract the models and materials folders to your \team fortress 2\tf\ folder, usually located in

C:\Program Files\Steam\steamapps\yoursteamusername\team fortress 2\tf\

If you want to use the alternate grey textures, do the above, then open the alternate grey textures folder, choose which team (or both teams) you want the grey skin for, then extract the materials folder in the tf folder, then overwrite the vtf files.