We tested these airbags on half-day tours as well as multi-day hut trips. We got tons of user feedback from friends, trusted guides, and avalanche educators. We read hundreds of studies on airbag packs in general and their statistics, as well as details on specific models.
These studies came from both manufacturers and third parties at universities and safety organizations. As always, we at OutdoorGearLab did mounds of side-by-side testing in our lab to assess comfort and pack usability.