The Fjallraven Tab Hat is a soft, comfortable unisex hat that is ideal for heating in colder conditions. Made from recycled polyester. The Fjallraven Tab Hat is a soft, comfortable unisex hat made from recycled polyester. This material wicks away moisture and dries quickly. Perfect for both daily use and in the mountains. Material Recycled polyester Polyester is a synthetic material made from petroleum. It is a durable, smooth fabric that is soft to the touch. In addition, it is lightweight, does not need to be ironed and dries quickly. Polyester, like many other materials, is also harmful to the environment. It is not biodegradable and contributes to the plastic soup in the ocean. However, polyester can be recycled very well. The use of recycled polyester reduces both waste and dependence on petroleum as a resource. Recycled polyester is therefore a sustainable and environmentally friendly alternative.