Should you put an offshore reinforcement package on the lower quality Dacrons or is that something that you just put on the better quality sail cloth? When it comes to the quality of Dacron sails, the better the quality, like the 400 and 500 series we offer, the longer they’re going to hold their sail shape and the more resistance they will have to UV damage from the sun. This level of Dacron sails will last you longer. The offshore package we offer has double tapes along the leech, luff, and foot. Wider seams, leech seam wedgies, reef reinforcement belts, and upgraded hardware.