u/Original_Dirt_1238

I usually travel with a backpack that perfectly fits Ryanair's small bag dimensions (40x30x20 cm). However, I noticed that Aer Lingus officially states their personal item limit is smaller (33x25x20 cm).

Do they actually check/measure personal items at the gate, or are they pretty relaxed about it as long as it fits under the seat? I'm trying to figure out if I risk getting hit with a gate fee/oversize charge.

Thanks in advance for the help!