Shopify Snippets and similar items I don't feel like looking up again.

snippet.liquid

<!-- List tags for product -->
{% if product.tags.size > 0 %}
<div><span class="mellow" >tags:</span>
{% for tag in product.tags %}
<a href="/collections/all/{{ tag | replace: ' ','-' }}">{{ tag }}</a>
{% endfor %}
</div>    
{% endif %}