This is the most awesome windsock EVER, measuring about 17 feet long! The windsock is designed to give you the most efficient wind indicator at a glance. If it is limp, winds are less than 4mph, at a 45 degree angle, winds are about 7mph and at a 90 degree angle it's TOO FAST TO FLY! or about 15mph.
The colors vary depending on material availability. They are built from recycled paragliders. There is a stiffener at the mouth to maintain shape.