The M90 camouflage pattern was introduced in the Swedish Army around 1990 - troops were seen wearing it in 1989.The desert version of this pattern is called M90K. The M90 uniform system is called FU90 (Fältuniform 90 = Field uniform 90), so the designation of the different uniforms is FU90P, FU90K, FU90L etc. however most people call them M90P, M90K etce.
M90 is a 4 color camouflage.