# Product Group List

The `product_groups` object describes a list of product groups in the store. Use this object to access all product groups or just the root product groups.

## Usage Example

```liquid
{%- comment -%} List all product groups {%- endcomment -%}
<ul>
  {% for group in product_groups.all %}
    <li>{{ group.title }}</li>
  {% endfor %}
</ul>

{%- comment -%} List only root product groups {%- endcomment -%}
<ul>
  {% for group in product_groups.root %}
    <li>{{ group.title }}</li>
  {% endfor %}
</ul>
```

## Properties

### all

List all available [product groups](/reference/liquid/objects/store/product_group/) in the store.

### root

List root [product groups](/reference/liquid/objects/store/product_group/) in the store.

### size

Returns the number of product groups in the list.