It’s a Google’s project that houses collection of components with material web design. It help you speed up your web development process. It helps you create anything from buttons to complete applications.
It packs the collection of web components that implements the material design. At core it uses the paper elements collection. It includes paper-button, paper-checkbox, paper-dialog etc.
You can use it to create your won web components, it helps you go with the modular development approach. The component you develop can be used in any of your future applications. Additionally, you can use the Polymer App Toolbox to create progressive web apps.
The material web design is definitely is in trend and Google using it in many of it’s products makes the trend every stronger. If you are developer or designer looking for an easier ways to create a new or cast an existing design, here are the list of 10 material