Saphena anti-embolism stockings is a product you can trust when it comes to helping reduce the threat of blood clots forming in your legs. Saphena anti-embolism stockings provide pressure to force blood back towards the heart with graduated compression which is strongest at the ankle and reduces further up the leg. Saphena is a Class 1 medical device and conforms to the latest European Standards for graduated compression and also complies with the Medical Device Directive. The compression profile of 18mmHg (ankle) and 14mmHg (calf) is in line with British Standard 7672:1993. This below the knee version is preferable compared to the thigh high version if you are looking to avoid constriction at the thigh.