Lead with the one feature that makes the viewer say 'wait, it does THAT?' Bury the rest for the consideration phase.
Broken down by Jonas, a former Meta growth lead, from Away's live ads in the Meta Ad LibraryAway doesn't list 12 features in their ads. They lead with one: the built-in phone charger (or the ejectable laundry bag, or the TSA-approved lock). One surprising feature is more memorable than a complete feature list. This works because the scroll-stop moment comes from surprise, 'a suitcase that charges my phone?', not from completeness. The single feature creates a reason to click. The full feature list lives on the product page, where the viewer is already in consideration mode and wants comprehensiveness.
Feature-hierarchy advertising works for any product with multiple features but one standout, tech gadgets, software tools, vehicles, home appliances. The discipline: resist the urge to list everything. Pick the ONE feature that creates surprise and lead with it alone. The rest of the features are for the product page. If every feature feels equally important, you haven't found your hero feature yet. Ask customers: 'what surprised you most about this product?' That's your ad.
This breakdown is built from Away's active ads, running for 6+ weeks at the time of writing, a signal the format is still working. See the current set for yourself in Meta's public Ad Library.