Advance Sigma
The Advance Sigma is a series of Swiss single-place, paragliders, designed and produced by Advance Thun of Thun.The Sigma was designed as a cross country intermediate glider.
The design has progressed through nine generations of models, the Sigma, Sigma 2, 3, 4, 5, 6, 7, 8 and 9, each improving on the last. The models are each named for their rough wing area in square metres.Variants
;Sigma 5 23
;Sigma 5 26
;Sigma 5 28
;Sigma 5 31
;Sigma 6 22
;Sigma 6 26
;Sigma 6 28
;Sigma 6 31
;Sigma 7 23
;Sigma 7 26
;Sigma 7 28
;Sigma 7 31
;Sigma 8 23
;Sigma 8 25
;Sigma 8 27
;Sigma 8 29
;Sigma 9 23
;Sigma 9 25
;Sigma 9 27
;Sigma 9 29