What was the "Star of Poland"?

Gwiazda Polski (The Star of Poland) was a balloon, which, according to the Polish planners, was going to reach the stratosphere, thus beating the 1930s high-altitude world record, established on November 11, 1935 in the Explorer II balloon. Stevens and Anderson ascended to the altitude of 22,066 m, the Poles wanted to reach the altitude of 30 kilometers. The balloon was made by the Aviotex factory in Legionowo and was the world's largest.