Powerful enough to move you. The Parafoil 7.5 has enough pull to be the favorite size for wind-powered sea kayaking. Made of ripstop nylon. 6′ drogue tail recommended for strong winds. 2′-4′ x 3′-2′. 7.2-sq. ft. Ready to Fly with 500′ of 90-lb. line on a hoop, 8′ x 11′ stuff sack and 15-ft. nylon tail. 6 to 20 mph winds.