National Red Sock Day is observed worldwide every third Saturday of February to raise awareness about peripheral artery disease (PAD), a condition characterized by the narrowing of arteries, primarily affecting the legs. Founded in 2022 by The Way to My Heart, a nonprofit organization dedicated to supporting PAD patients and their caregivers, the day aims to encourage dialogue between patients and physicians to improve diagnosis rates and prevent complications. The symbol of the day is a red sock with a blue toe and heel, representing a healthy circulatory system and the effects of untreated circulatory issues, respectively. Activities include purchasing red socks from The Way to My Heart to support PAD patients, discussing PAD with healthcare providers, and sharing personal stories to promote testing among those at risk. Participants are encouraged to use the hashtags #RedSockDay and #NationalRedSockDay on social media to spread the message.