Final answer:
Wick Dry® technology is used to keep feet cool and dry by wicking away moisture from the foot and keeping it dry.
Step-by-step explanation:
The technology used to keep feet cool and dry is Wick Dry® technology. This technology is designed to wick away moisture from the foot and keep it dry. It works by utilizing special moisture-wicking fibers in the fabric of the sock, which draw moisture away from the skin and towards the outer surface of the sock where it can evaporate.