The Lightning MF-2 Mainsail is a forgiving and true all-around performer that offers consistent speed in all conditions. The "fanned" panel layout helps increase durability and shape control in a breeze. Computer designed custom clew and head patches help achieve an optimal smooth shape and increase the MF-2's durability and shape holding. The MF-2 is designed to work with a pre-set block and shroud setup, which will simplify the boat tuning and gear changing all around the race course. The mast blocks and lower shrouds are never adjusted, allowing focus to remain on sail trim, steering and tactics. The MF-2 is the ideal sail for sailors who prefer a "set it and forget it" tuning system but still want that championship speed.