The WindSUP is all about bringing windsurfing back to a simpler time, but with a few modern touches. The sail can go from the roof of your car to the water in under a minute. Just pull the mast bag off, fold the boom down and roll the sail out. Attach the outhaul, and you're ready to go! With its vertical battens, this sail offers the convenience of keeping the sail on the mast, but still maintains a modern outline with a fat head and increased area below the boom. Pop this on a SUP or any longboard and remember how fun windsurfing can be in just 5 to 10 knots of wind. Durable dacron construction with vinyl window. Durable dacron construction Concept: Cruising Vinyl window *Denotes adjustable head Vertical battens Bungee and button on sail so sail can be rolled with boom attached Zipper on bag extends to top of boom opening so boom can stay attached to mast with sail in the bag Sail only Size Luff Boom Battens Cams Mast Weight 2.5 290* 145 1 Vertical 0 310 1.7 3.2 310* 155 2 Vertical 0 310 2.1 4.0 330* 175 2 Vertical 0 340 2.25 4.8 395* 180 2 Vertical 0 400 2.5 5.8 430 193 2 Vertical 0 400 or 430 2.74