Advance Bi Beta

The Advance Bi Beta (sometimes written as BiBeta) is a tandem two-place paraglider, designed and produced by Advance Thun of Thun, Switzerland.
Design and development.
The Beta was designed as a two-place flight training glider for introducing new student pilots to the sport.
The Beta has undergone continuous development, starting with the original Beta, through the Beta 2, 3, 4 and 5 models.