Cruising sail : spinnaker (for multihulls)
BATMAIN UK-Halsey International

The UK-Halsey Batmain makes cruising easier and more enjoyable! The Batmain is easier to handle, keeps it's sail shape better and lasts longer than standard mainsails.
The secret to the Batmain's ease of handling are the full-length battens that run from leech to luff. When you combine the Batmain with sail handling systems like the the Dutchman system, or basic lazy jacks you'll no longer need a cast of crew members to douse and furl the mainsail. Just release the halyard, stand back, and watch the main settle easily onto the boom. With the Lazy Cradle the sail settles between the Cradle's lazy jacks into the main sail cover.
Besides being easier to handle, the Batmain lasts longer. Why? Because the full-length battens prevent flogging -- the violent snapping back and forth that happens when you're tacking, reefing, hoisting or lowering your sail. As conventional sails flog, the sail cloth breaks down, especially at the front end of the battens where the leach of the sail "hinges" back and forth. Flogging is a prime culprit in sail wear-and-tear.