Tube sock: A type of sock that is characterized by its long, cylindrical shape and lack of a defined heel. It typically reaches up to the mid-calf or knee and is often made of stretchy materials like cotton or synthetic fibers. Tube socks are commonly worn during sports activities or as casual footwear, providing comfort, cushioning, and protection for the feet. They are known for their versatility and ability to be folded or scrunched down to different lengths, making them a popular choice among athletes and fashion enthusiasts alike. 🧦