Roto-molded coolers are popular due to a manufacturing process called rotational molding.
The process consists of heating & softening material, applied slowly into a rotating mold,
then in the cooling phase it produces a thick material but for coolers,
the heated plastic liquid is applied over a thick layer of insulation,
resulting in a product with no seals or imperfections proving to be both stronger & durable than traditional coolers.
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