A Russian version of tiger stripe pattern was introduced circa 1993 in both a green and a blue (urban) colorway. Referred to in some period literature as the Piatnisto-fioletovoe obmundirovanie (spotted violet uniform) or PFO, the two designs are more commonly referred to as Kamush (Cane), or as Tigr (tiger) and Тень (Ten) (shadow). The patterns were initially only worn by MVD OSN (Vitiaz) and OMON, but use has spread to a variety of special units of the MVD. Indeed, the tiger patterns have continued to be worn by Russian forces into the present period, making them one of the longest-lived MVD camouflage designs. Some variations in coloration have been documented, depending on the fabric and manufacturer.