If you don't want to wear traditional knee-high "flight socks" (compression socks), there are several effective alternatives to help prevent Deep Vein Thrombosis (DVT) and reduce leg swelling during long-haul travel. Compression leg sleeves (calf sleeves) are a popular choice; they provide the same graduated pressure from the ankle to the knee but leave your feet free, allowing you to wear your own favorite socks or sandals. For those who find full socks too restrictive or hot, open-toe compression socks offer the same medical benefits while providing ventilation for the toes. Another alternative is compression tights or leggings, which provide support for the entire leg and can be more comfortable for some travelers than a tight band below the knee. If you cannot wear compression garments at all, the most critical "behavioral" alternative is active movement. This includes performing "seated calf raises" and ankle circles every 30 minutes, and getting up to walk the aisle for a few minutes every hour. Staying extremely well-hydrated and avoiding alcohol also helps maintain healthy circulation. However, if you have a high risk of blood clots, you should consult a doctor about medical-grade alternatives like blood-thinning medication, as standard clothing cannot replicate the mechanical pressure of graduated compression.