Final answer:
Elastic stockings aid in circulation and healing by preventing blood pooling in the legs and providing increased pressure to send blood back to the heart.
Step-by-step explanation:
Elastic stockings aid in circulation and healing. They help prevent accumulation of blood in the legs and swelling, and provide increased pressure to enable the veins to send blood back up to the heart. Similar to elastic bandages, tight stockings are recommended for long-haul flights to prevent blood pooling in the legs.