Content Picker

I will be listing product that come in different sizes

I want to integrate a content picker such as a drop down box or radio buttons to select the sizes.

I will be listing product that come in different sizes

I want to integrate a content picker such as a drop down box or radio buttons to select the sizes.

I will be listing product that come in different sizes

I want to integrate a content picker such as a drop down box or radio buttons to select the sizes.
Follow example of 50's Rockabilly Polka Dot Top JR Plus Size in demo store/admin:

1) Define your product variant attributte (size in your case) in admin>catalog>attributes>product attributes:
http://admin-demo.nopcommerce.com/Admin/ProductAttribute/List

2) Assign (insert) the attribute(s) (size) to your product variant in admin>catalog>manage products>creat/edit product>product variants tab>edit product variant>product variant attributes tab>insert :
http://admin-demo.nopcommerce.com/Admin/ProductVariant/Edit/63

3) Define the values of your attribute (admin>catalog>manage products>creat/edit product>product variants tab>edit product variant>product variant attributes tab>View/Edit value ):
http://admin-demo.nopcommerce.com/Admin/ProductVariant/EditAttributeValues?productVariantAttributeId=20