Noun : The auditorium chairs are collapsibles that store easily.    From Dictionary.com. 

This is the same state that allows the existence of an extremely dangerous permanent, non-collapsable barrier to hug the edge of the Chapala-Jocotepec road.    From Wordnik.com.  [Lake Lamentation] Reference

I have both clear and cloud style, non-collapsable types but they are bulky.    From Wordnik.com.  [News: Digital Photography Review (dpreview.com)]