A sleeve sail is ideal for sailing schools and intro sailing. A sleeve pocket at the luff slides over the mast with a cutout for the sprit halyard block. This sail is built strong to last long, made of 4 US oz. high quality 100% dacron sailcloth. The sail has 4 heavily reinforced corners, a loose foot and webbing loops at both the tack and the clew point to accommodate the boom. The sail does not have any battens and should be used with sleeve school mast EX1012, which has no pin stop and has no stainless steel eyes for fixing the head of the sail.