A metal-lined polyethylene raincoat is designed for a specific function or purpose. Here, "metal lining" refers to the layer of metal on the inside of the raincoat, typically a thin metal foil such as aluminum. Polyethylene is a lightweight, water-resistant, and flexible plastic material. However, you should be cautious not to be blown away by the wind during heavy rain, especially when it's raining cats and dogs.

This type of raincoat exhibits the following characteristics:

Insulation: Metal linings reflect heat and are sometimes used to provide extra warmth. This is particularly useful for outdoor activities in cold regions and harsh weather conditions.

Water resistance: Polyethylene is impermeable to water, serving its fundamental role as a raincoat.

Lightweight: Polyethylene is an extremely lightweight material, making the raincoat easy to carry and comfortable to wear.

Reflective: The metal lining reflects light, increasing visibility when worn in low-light conditions or at night.

Durability: Polyethylene is tear-resistant and durable on its own, but the addition of a metal lining enhances its strength.