The Viper 4 is our paramotor competition wing designed for advanced pilots only. The Viper 4 can be used for classic or slalom competition tasks, and is a highly efficient and versatile performance PPG wing. It is an evolution of the V3, with a 3-line design, unsheathed lines, and a new profile. In thermal conditions its behavior is similar to a paragliding wing, with excellent climb and glide performance and with progressive and intuitive handling that transmits moderate feedback to the pilot. more info http://www.flyozone.com/paramo....tor/en/products/glid