2010 5.1 Fly windsurf sail. Luff 410cm, boom 169cm. 4 batten wave sail, fixed head. Neil Pryde prototype, hand-built in Maui, Hawaii at the NPDC. Has seen its fair share of time on the water, but still a little bit of time on the water left in the ol' fellah. Hole in luff sleeve between 1st and 2nd batten in a non-critical load section (no more than a hassle for rigging). Sold AS-IS. FREE Shipping.