This is a website that provides free illustration materials. You can download the materials for free after registering. The download will be a compressed file, which will contain two files: PNG and vector SVG. You can adjust the color of the materials through the website's tool before downloading. If you use a free account, you need to indicate the source. If you pay, there are two pricing methods: one is 15 US dollars per year; the other is 49 US dollars for lifetime use. The actual charging method is subject to the official website's explanation. The material categories include work, sports, occupations, etc. These illustrations are simple and flat style, very suitable for use in various situations.