Multiple outlets report on a test of airlines’ free under-seat baggage allowances, designed to show how much travelers can pack without paying baggage fees. The articles state that You (YOU) fashion editor Hannah Skelley evaluates the amount of luggage that fits within each airline’s under-seat rules. The test focuses specifically on under-seat baggage allowances rather than larger cabin bags or checked luggage. According to the summaries, the exercise is intended to determine which airline allows the most effective packing for passengers, using a standardized set of “holiday essentials.” The reported goal is practical comparison—how much luggage a traveler can fit while staying within the free allowance. The articles also indicate that the packing check includes enough items for roughly four days of travel needs. The coverage is presented as a real-world trial of airline policies, highlighting differences in what passengers can carry for free under-seat, and helping travelers decide which airlines may offer more room for cabin items that would otherwise trigger additional fees.