Abstract: A portable collapsible seating apparatus for attachment between lateral support members having a mechanism for seating, the seating mechanism having a plurality of elongate longitudinal straps, each of the longitudinal straps having respective ends, and a plurality of transverse stays, each of the transverse stays extending approximately perpendicular to the longitudinal straps and each transverse stray attached to each longitudinal strap so as to allow the longitudinal straps to separate by selected distance; a pair of mechanisms for end spreading, each of the end spreader mechanism attached to a respective end of each of the longitudinal straps, each end spreader means having a rigid transverse holder for holding and aligning the ends of the longitudinal straps, each transverse holder having ends; and a pair of mechanisms for attachment each attachment mechanisms attached to a respective end spreader mechanisms, each attachment mechanism attached to each end of a respective transverse holder and having a st