The High Authority for Health (HAS) and the FrenchNational College of Gynecologists and Obstetricians havegiven opinions on the importance of wearing compressionduring pregnancy and postpartum (respectively in 2010 andin 2016). About the prevention of deep or superficial venousthrombosis. The available recommendations support the useof 15-20 mmHg compression at the ankle during pregnancyand up to 6 weeks postpartum for surgery including caesarean section. The data available in pregnant women on thepreventive or curative treatment of chronic venous diseaseare most often a matter of professional agreement. In thelight of these data, the HAS considered that the systematicwearing of a compression of 15-20 mmHg, of 20-36 mmHg ormore was justified. One particular point, the HAS consideredthat maternity tights are no more effective than stockingsor thighs as well in the treatment of venous thrombosis aschronic venous disease during pregnancy