A wind sock, also known as a windsock, is a textile cone-shaped device that indicates wind direction and speed. Typically found at airports and along Coastlines, it inflates with the wind, showing the wind's direction by pointing away from the source. The angle and extension of the windsock can also provide a rough estimate of wind speed; a fully extended sock indicates stronger winds. Its design allows for easy visibility and is crucial for pilots and mariners in assessing weather conditions.