The Zipper is a highly innovative design that strongly emphasizes portability over speed or carrying capacity.
The Zipper incorporates many unique features, all aimed at making the aircraft more portable.
This focus was due to the nature of operations in the early days of the ultralight popularity.
[1] The Zipper has a quick-folding wing, built around a D-cell leading edge and spar.
The all-metal, one piece, all-flying rudder and the elevator are quickly removable for transport.