Phi VIOLA wing review
The Phi Viola is a wing that appeals to potentially the widest range of pilots imaginable. The majority of sizes are EN A, and are thought of as lightweight hike and fly wings, and that's correct, as it's a lightweight version of the Sonata. However, it's also a very capable mainstream wing, and a mini wing for alpine flying or high wind soaring. It is able to cater for all these demands with a range of eight sizes, and certification from EN A to EN D, depending on the size chosen, and the use of extended weight ranges.