This compression sock is designed to increase blood circulation in the feet and legs. The increased pressure acts preventive against blood clots and varicose veins. The sock also prevents swelling and is comfortable for tired legs as it gives a pleasant massage effect. Even people without circulation problems benefit from the sock, for example, air travel or long hours on the job where you walk and stand a lot. The sock meets class 1 compression, 16-18 mmHg. The sock is tested for allergies, irritation and sensitization with ISO 10993-5:2009 and ISO 10993-10:2010. It is also Oeko-Tex 100 certified.