The Adventure sail, the most popular model, is intended for the serious sea-kayaker. This is the sail for expeditions on big water. The sturdy and unbreakable perimeter batten maintains sail shape in high winds and allows for high sailing angles. Recently upgraded to a larger 47 diameter sail with a flatter profile. More power to help in lighter winds, and the flatter cut allows for a more stable sail and easier across-the-wind sailing. Easily sail in a full 180 degree off-the-wind angle envelope or more. More power, stability and speed! Designed for 5-30 knots. Best for boats 12'-18' long and all SOT's. Deployed diameter 47 12 sq ft . Coils and stows into a small 16 diameter package. Wt 16 oz. Windpaddle Adventure Sail