Seaweed Used for Gimbap (김밥)

There is a seaweed specifically used for making Gimbap called 김밥김 (gim-bap-gim) 

It is a pressed seaweed that is sturdier in texture. One side of the seaweed is shiny, and one side is duller. The shiny side is placed down on the rolling mat so that it is on the outside of the kimbap after rolling.