Compression socks recommendation

[Honest23]

Can anyone recommend good compression socks for long haul flights? My MIL suffers badly with swollen feet and due to fly long haul in a couple of weeks.

Sorry I can’t advise on brand, but whatever you buy it must be a sock that has different sizing based on calf measurements, otherwise they aren’t actual compression socks. There are lots of knocks claiming to be compression socks, so please ignore the ones that don’t need measurements.