Breadcrumbs... back up a level?

I have organized my products into categories and subcategories as follows:
- Hats
- - Baseball Hats
- - Visors
- Shirts
- - T-Shirts
- - Sweatshirts
- Pants
- - Pajama Pants
- -Yoga Pants

Right now, the Main Category Page shows three options: Hats, Shirts and Pants. When I click into one of them (Hats, for example), I see the two sub-categories and an arrow that takes me to the next Category (Shirts in this case). What I would like to see is a "Go back up one level" button so that if a customer is looking at Sweatshirts they could easily head back to the Main Category Page to easily get to Shirts.

Is this possible?

Hello Seth,

I am sorry but this is impossible. When you are viewing a category, the navigation links are the links to other categories which are same level.

Sincerely, Giang