Option for product drop down even if you just have one product style

Site URL: http://www.ooskicks.com

Hello, 

I am a new user here and love the Squarespace format. I have come across one issue as I am selling a certain type of vintage shoe. Some shoes I may have multiples, but some other ones I might only have one pair. I would like to have solidarity throughout my whole website, is there a way to add the drop down menu when I only have one style code? 

Or do i have to do SINGLE entry of description that I only have product for?  

Please and thanks!