Stripped to the essence, PRIMARY is the first comprehensive Quinze & Milan collection and a line that deserves to be called a Quinze & Milan classic. PRIMARY collection kicked off the use of QM FOAM™, a proprietary material developed and produced by Quinze & Milan. Another member of the PRIMARY family, PRIMARY SOLO, is for those of you who prefer to have a backrest when they sit down. QM FOAM™ ensures easy cleaning, superior comfort and durability.