Backpacks, backpack systems, backpack inserts and related methods

A method of using a cooler insert in a backpack, the method comprising:

• providing a backpack comprising:
• a front wall having an interior face and an exterior face with one or more front wall magnets on the interior face of the front wall;
• a first side wall extending from a first side of the front wall and a second side wall extending from a second side of the front wall opposite the first side wall;
• a bottom extending between bottom portions of the front wall and the first and second side walls,
• a top panel having an interior face and exterior face and extending between top portions of the front wall and the first and second side walls, the top panel comprising a fastener for securing the top panel to the front wall and at least a portion of the first and second side walls such that the top panel is openable and closeable;
• a rear panel opposite the front wall and extending between first and second side walls, the bottom, and the top panel, the rear panel comprising a fastener for securing the rear panel to the top panel and at least a portion of the first and second side walls such that the rear panel is openable and closeable and the rear panel comprising an interior face and an exterior face with one or more rear panel magnets on the interior face of the rear panel;
• and
• at least one fastener positioned proximal the interior face of the top panel of the backpack;
• and
• providing a cooler insert comprising:
• a front wall having an interior face and an exterior face;
• a first side wall extending from a first side of the front wall and a second side wall extending from a second side of the front wall opposite the first side wall;
• a rear wall opposite the front wall and extending between first and second side walls;
• a bottom extending between bottom portions of the front wall, rear wall, and the first and second side walls;
• a top panel having an interior face and exterior face and extending between top portions of the front wall, the rear wall and the first and second side walls, the top panel comprising a fastener for securing the top panel to the front wall and at least a portion of the first and second side walls such that the top panel is openable and closeable;
• and
• at least one fastener positioned proximal the exterior face of the top panel of the cooler insert;
• opening the rear panel of the backpack;
• inserting the cooler insert into the cavity of the backpack such that the front wall of the cooler insert engages at least one of the one or more front wall magnets of the front wall;
• engaging the at least one fastener on the top panel of the backpack with the at least one fastener of the top panel such that, when opening the top panel of the backpack, the top panel of the cooler insert opens;
• and
• closing the rear panel of the backpack such that the rear wall of the cooler insert engages at least one of the one or more rear panel magnets of the rear panel such that the engaged front wall magnets have a stronger magnetic pull than the engaged front wall magnets to hold the cooler insert within the backpack when the rear panel is opened.