The pixelated camo dubbed 'Granite B' was adopted by the ROK in 2010 and used by the ROK Army, Navy (until 2021 when the navy adopted a new pattern), and Air Force. The pattern in corperates dark green, brown, and khaki shades. 
ROK pieces are hard to find and a great addition to any collection!
 
Issued military surplus in good condition (top button on pants in missing). Pants are a 32-34" (MD) waist.