Product Detail - Features - Show/Hide

Is it possible to code product_features.tpl in such a way that it only shows the product features relating to that product if they have been selected or have a value in them?

Eg Product Features: Plastic Free, Gift Wrapped, Rechargeable, Manufacturer etc

For each product differing features can be selected, not necessarily all.

I would like to only show those features that have been selected. Currently all features are shown.