Add Product options (feature or attribute)?

[addren]

I need to add a drop down that allows you to choose a product style or finish, etc - but this should apply to all products in a category... is there a way to do this (instead of adding all features again and again to every product one at a time)?

 

 

 

Please help.

I see in one of the Prestashop portfolio sites, they have done this (see 'Size') here:

http://www.headict.co.uk/4122-aprilia-rigavel-noir.html

...I assume they don't add all sizes manually for every product

 

 

I am using Prestashop 1.6

Dev site: http://bedsmart.addrenhost4.com/