tetoonline on "[Plugin: WooCommerce - excelling eCommerce] Add SKU cart page"

I found the code: in file:
/wp-content/plugins/woocommerce/templates/cart/cart.php

But what is the correct to add SKU?

<table class="shop_table cart" cellspacing="0">
	<thead>
		<tr>
			<th class="product-remove">&nbsp;</th>
			<th class="product-thumbnail">&nbsp;</th>
			<th align="left" class="product-name"><?php _e( 'Product', 'woocommerce' ); ?></th>
			<th class="product-price"><?php _e( 'Price', 'woocommerce' ); ?></th>
			<th class="product-quantity"><?php _e( 'Quantity', 'woocommerce' ); ?></th>
			<th class="product-subtotal"><?php _e( 'Total', 'woocommerce' ); ?></th>
		</tr>
	</thead>