On a long haul flight to your dream destination there are some health considerations to be made as well as whether you remembered to pack your favourite swimsuit dvt deep vain thrombosis is the formation of a blood clot caused by long periods of inactivity especially if we add a cramped airplane cabin and dehydration thankfully scholl have come to the rescue with their sem sheer soft flight socks with the feel of an everyday sock but with that desired level of compression they are super sof