It is a polymer mix that dries relatively quickly.
[1] On September 15, 2010, Ian Sample, The Guardian's Science correspondent reported on a press conference where Dr Manuel Torres showed a spray-on clothing product named Fabrican.
[2] Covering the same announcement Prita Ganapati, writing for Wired magazine referred to the result as "spray-on fabric".
Scientific American referred to both "spray-on clothing" and "spray-on clothes".
[1] Torres described the fabric as similar to felt.