Reusable ice pack or freezer brick, commonly used to keep food and drinks cold in coolers or insulated bags. 

Material: Rigid plastic casing containing freezing gel or water.

Freezes solid in a freezer and releases cold energy to maintain low temperatures.

Ideal for picnics, camping, and transporting perishable goods.

Features: Reusable, durable, and generally non-toxic.

Size: 22x17x3cm