PaintTool SAI offers a number of professional features such as support for layers and multiple editing modes. All brushes can be set to a specific thickness or hardness and supports a full palette of colors. It supports endless brush types/sizes and provides a number of handy options. This application is primarily a painting program which works a million times better than what Windows comes installed with. Get your mouse or digitizer ready and get to work painting on a new canvas facilitated by PaintTool SAI.