Lunch bag

A durable, flexible and disposable gusseted bag comprising:

• a rectangular anterior wall having an upper end, a base end and two opposing sides;
• a rectangular posterior wall having an upper end, a base end and two opposing sides;
• two opposing triangular lateral walls, each having two equal elongated sides and a base, the two elongated sides of each of said lateral walls joining said anterior wall to said posterior wall along their respective two opposing sides;
• a rectangular bottom wall joined to said anterior wall and said posterior wall along their respective base ends, and joined to said lateral walls along their respective bases;
• said lateral walls and said bottom wall includes respective creases defining gussets for infolding of said lateral walls and said bottom wall;
• said anterior wall and said posterior wall intersecting at their respective upper ends to form a mouth;
• a pressure sealing slider assembly disposed at said mouth and having a bead type seal and a slider for alternately closing and opening said mouth;
• and
• a pair of mating fastener strips extending horizontally across said anterior wall at an upper portion of said bag, a first of said fastener strips being spaced downwardly from said mouth, and a second of said fastener strips being spaced parallel to the first of said fastener strips for removably fastening of the upper portion of said bag in a folded over position.