Wilko travel socks provide firm comfortable support for your feet and legs during flights and long journeys one of the biggest causes of flight related dvt deep vein thrombosis is poor circulation and fluid build up from being inactive for a long period of time these flight socks have a graduated compression design which can help improve circulation and make for a more comfortable journeymaterials 56 cotton 38 polyamide 6 elastanealways follow care instructions provided