Fully battened mainsails that roll into specially designed booms offer sailors the ease of roller reefing and roller furling without the loss of performance in mast furlers create. Mains for in boom furlers must be built to very strict tolerances for the different manufacturers' requirements. UK Sailmakers has plenty of experience making sails for the Furlboom™, Leisure Furl™, Profurl™ and Schaefer In-Boom Roller Reefing. Pictured above is a custom 48 footer with a furl boom. 
     And with all the roller-furling masts in service, we have made many battenless mains for those systems. Pictured is a Beneteau 40 center-cockpit that did well in the 620-mile Newport to Bermuda race with her roller-furling main.