Shimano Cooler Box NB-440W Absolute Freeze Light 40L Gray

It has both airtightness and rigidity to prevent cold air from escaping.
The lightest model in the series that can be easily carried around.

A lightweight model at an affordable price that combines "cooling power", "airtightness" and "rigidity".
The lightest model in the Absolute series, using polystyrene as insulation.
The highly airtight main body structure provides more than enough cooling power.
Two commercially available ice packs can be placed on the bottom, making it perfect for casual fishing from a day trip to an overnight stay.

KEY FEATURE

A well-thought-out size that fits plastic bottles and ice packs perfectly
Two commercially available ice packs weighing around 1000g can be placed side by side on the bottom.
The 40L model has a height that allows a 2L plastic bottle to be placed vertically.
The size is designed to be lean and easy to use in the field.

Excellent airtightness that prevents water from leaking and cold air from escaping
The Absolute Freeze series achieves high airtightness through a new lever mechanism structure.
Even if it is tilted slightly, water is unlikely to leak and cold air is unlikely to escape.
It is also safe to travel by car.

The double effect of airtightness and polystyrene insulation keeps things cold
The double effect of airtightness provided by the new lever mechanism structure and polystyrene insulation keeps the inside firmly in place