<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<div class="control-group" id="fields">
<label class="control-label" for="field1">Nice Multiple Form Fields</label>
<div class="controls">
<form role="form" autocomplete="off" class="form-inline">
<div class="entry input-group col-xs-7">
<span class="input-group-btn">
<button title="None selected" type="button" class="text-left btn btn-default" ><strong>AGE RANGE:</strong> None selected <b class="caret"></b></button>
</span>
<div class="input-group-addon">£</div>
<input class="form-control" name="" type="text" placeholder="Type something" />
<span class="input-group-btn">
<button class="btn btn-success btn-add" type="button"> <span class="glyphicon glyphicon-plus"></span> </button>
</span>
</div>