Hiding the main navigation bar.

To Whom it May Concern,

I have a page on my website that is selling 2 products. I would like this page to have no main navigation menu (the main menu on the top of the site), and really no way for visitors to see the rest of my site as it is still under construction. To that point, you will notice when you go to the page ( it's http://wilton2.wpengine.com/product-category/framesandpanels/) that there is also a tiny navigation menu that states "home/FRAMES AND PANELS". I would like that tiny navigation menu to be hidden as well.

In addition to this, I would also like to make sure that when visitors click on either one of the products that both the main navigation menu and the tiny navigation menu I mentioned earlier continues to be hidden. And as you might have guessed, I would like the to know how to make sure both the main navigation menu and the tiny navigation menu are hidden when visitors to my site buy the product and are in the shopping cart.

I hope this questions makes sense. I look forward to your response.