[1] The unique feature of the aircraft were the two narrow-chord biplane wings in an inverted sesquiplane configuration.
[1] The upper wing normally had an area of 6.30 m2 (67.8 sq ft) but additional flexible surfaces inside the fuselage could be extended using an electrical motor to increase the wing area to 26 m2 (280 sq ft).
[1] The Varivol was powered by a 230 hp (172 kW) Salmson radial piston engine with a two-bladed propeller.
[1] The aircraft continued to fly successfully until November 1936 when it was destroyed in a fatal crash, an investigation determined the accident was not due to the variable-area wings.
[1] Further development of the Varivol concept was carried out with the Gérin 1938 V.6E Varivol Racer a sleek monoplane racing aircraft that was built just prior to and during World War II, being put into storage after the war.