Built for Speed
Polymer 1.0 replaces the shadow DOM polyfill with a lightweight shim, uses a new, faster data-binding system, and significantly reduces code size.
POLYMER
For Modern Browsers
Polymer is built from the ground up for modern browsers, using the latest web platform APIs. Polyfills provide support on evergreen browsers for APIs that aren't universal yet.
Using Web Components
Polymer leverages web components, a new set of standards designed to provide reusable components for the web.
Create your own elements
The Polymer library makes it easy to create your own powerful elements. Give your element some markup and properties, and then use it on a site. Polymer provides useful features like templating and data binding to reduce the amount of boilerplate you need to write.