Insulation Plastic Dome Caps is an innovative design that combines the lightweight and thermal insulation properties of plastic. This type of hat usually adopts a hollow design and achieves insulation effect through an air layer. Air is a poor thermal conductor, so forming an air layer between the inner and outer layers of the hat can effectively reduce the conduction of heat. In addition, this design also increases the ventilation of the hat, making the wearer feel more comfortable in hot weather.

Specifically, the outer layer of the hollow top Insulation Plastic Dome Caps is usually made of weather resistant plastic materials such as polypropylene (PP) or polycarbonate (PC), which not only have good thermal insulation performance, but also high strength and durability. The inner layer can be made of soft plastic material or fabric to improve the comfort of wearing. In addition, some high-end hollow roof Insulation Plastic Dome Caps will add special thermal insulation materials, such as foam plastic or reflective layer, to the interlayer to further enhance the thermal insulation effect.