This Toggle On icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 15,500 icons, all in the same style and quality.
This icon looks like a switch which can be toggled by sliding left to right. The border of the switch is a rounded oval, and the button itself is a circle which slides between two positions from left to right. The icon shows the circle in the right position.