Waves is an external library that we've included in Materialize to allow us to create the ink effect outlined in Material Design

Applying Waves

To put the waves effect on buttons, you just have to put the class waves-effecton to the buttons. If you want the waves effect to be white instead, add both waves-effect waves-light as classes.

Wave
I am a very simple card. I am good at containing small bits of information.I am convenient because I require little markup to use effectively. I am similar to what is called a panel in other frameworks. 
  <a class="waves-effect waves-light btn-large" href="#">Wave</a>

Customization

There are several ways to customize waves, you can either use pre-created classes, or you can define your own color by creating a new class

Available Colors

To use these, just add the corresponding class to your button. Play around with changing the background color of butons and the waves effect to create something cool! 

    <a href="#!" class="btn waves-effect waves-teal">Send</a>
DefaultSend
waves-lightSend
waves-redSend
waves-yellowSend
waves-orangeSend
waves-purpleSend
waves-greenSend
waves-tealSend

Custom Colors

If the color you want is not already available, you can easily make your own waves color by creating a custom CSS class. Take a look at the example below where we add a waves-brown effect 

    /*    When creating your CSS selector,    change "brown" to something of your choosing    */    .waves-effect.waves-brown .waves-ripple {     /* The alpha value allows the text and background color     of the button to still show through. */      background-color: rgba(121, 85, 72, 0.65);    }

Circle

If you want waves to form to a non rectangular shape, there is an option for circular waves. Just add the waves-circlein addition to waves-effect

HTML Markup 

  <a href="#!" class="waves-effect waves-circle waves-light btn-floating secondary-content">    <i class="mdi-content-add"></i>  </a>
Default
waves-light