Features

Identical inputs across different browsers and devices — both desktop and mobile
Touch devices support — iOS, Android, BlackBerry, Windows Phone
Keyboard accessible inputs — Tab, Spacebar, Arrow up/down and other shortcuts
Customization freedom — use any HTML and CSS to style inputs (try 6 Retina-ready skins)
jQuery and Zepto JavaScript libraries support
Lightweight size — 1 kb gzipped

iCheck works with checkboxes and radio buttons like a constructor. It wraps each input with a div, which you may customize yourself or use one of the available skins. You may also place inside that div some HTML code or text using insert option.

For this HTML:

<label>
  <input type="checkbox" name="quux[1]" disabled>
  Foo
</label>

<label for="baz[1]">Bar</label>
<input type="radio" name="quux[2]" id="baz[1]" checked>

<label for="baz[2]">Bar</label>
<input type="radio" name="quux[2]" id="baz[2]">

With default options you'll get nearly this:

<label>
  <div class="icheckbox disabled">
    <input type="checkbox" name="quux[1]" disabled>
  </div>
  Foo
</label>

<label for="baz[1]">Bar</label>
<div class="iradio checked">
  <input type="radio" name="quux[2]" id="baz[1]" checked>
</div>

<label for="baz[2]">Bar</label>
<div class="iradio">
  <input type="radio" name="quux[2]" id="baz[2]">
</div>