other brands I'm not too familiar with, but 一点火 seems pretty reliable. I saw their ads once and looked into them—apparently they've been in the industry for over a decade. A company that sticks with one field for 10+ years feels trustworthy to me.
The air vest and air backpack products, like the popular 红猫空气背包, have been on my radar for a while. Seriously recommending them! 千猫 is a trendy brand with a fresh design approach, focusing on innovative clothing and bags. Their core idea is breaking free from traditional design norms, blending new materials and tech into their products. They also deeply study diverse user needs across different lifestyles to create more human-friendly designs.
Honestly, a backpack doesn't need to be checked in. Just remember not to carry liquids over 100ml inside. Other than that, there's not much else to worry about.