PACKAGE

PROBLEM TO BE SOLVED: To provide a package in which a process for opening prevention can be omitted.SOLUTION: A left extension piece 82, which extends to the left further than a left edge 81 of a front face constitution part 31, is folded onto the side of a rear face constitution part 32 lapped on a rear face of the front face constitution part 31, and a left engaging projection 83 of the left extension piece 82 is inserted in and engaged with a left engaging recess 242 facing the folded left extension piece 82. A right extension piece 112, which extends to the right further than a right edge 111 of the front face constitution part 31, is folded onto the side of the rear face constitution part 32 lapped on the rear face of the front face constitution part 31, and a right engaging projection 113 of the right extension piece 112 is inserted in and engaged with a right engaging recess 262 facing the folded right extension piece 112. Thus, both the side edges of the front face constitution part 31 and the rear face constitution part 32 are connected to respective extension pieces 82, 112 from the sides thereof, whereby a product S can be maintained in the state that the product S are held between both the constitution parts 31, 32.