If you’re flying long-haul (and haven’t upgraded), you are stuck in a small space for an extended amount of time, and for this reason, compression socks are useful because they can help increase circulation in the legs, and also reduce the risks of DVT (deep vein thrombosis).

Berkeley Wellness notes that when the flow of blood from the veins to the heart is affected by circulation problems, like a lack of movement or weakness in the walls of the veins, the blood can pool in the bottom of the legs. This can lead to a number of problems, including pain and swelling, however, compression socks work by squeezing the tissues and returning the blood in the veins to the heart. Keeping this in mind, it’s clear that in some instances, compression socks are beneficial.

Compression socks have a technology, that according to Active, has been proven to limit swelling. And according to Today, one of the best tips for staying healthy and happy on a flight is to hydrate the night before and avoid alcohol and diuretics, as well as dress comfortably in loose-fitting clothes. But the publication also notes that compression socks can help reduce the swelling in ankles, something which Olympic gold medalist in rowing, Susan Francia, noted after wearing compression socks on long-haul flights.

If you have pre-existing conditions, then wearing compression socks is even more important, and according to Trip Savvy, these garments are necessary for individuals with medical issues (including those who are high at risk for blood clots, or post-thrombotic syndrome). They also note that while there are many different styles to choose from, you should remember that the higher the socks, the tighter they will be. And while wearing compression socks is safe for most people if worn correctly, and according to Berkeley Wellness, they should be smooth against the skin without any folds. However, there are some people who should avoid them, including those with fragile skin, skin infections, and peripheral neuropathy.

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