The Columbia Bugaboo Beanie is warm and flexible, perfect for winter days. Thanks to the use of synthetic materials, the hat retains heat, the material does not pill and retains its shape. The hat is made of soft acrylic. This classic material is often used in the production of winter hats, because it is durable and perfectly adapts and adheres to the head. Inside, a fleece band is used, which is responsible for absorbing moisture and wicking it away from the forehead. The fleece material does not cause irritation. The hat uses the proven Omni-Heat ™ Reflective lining. The delicate material with silver dots blocks heat loss, thanks to which it is possible to retain 20% more of the heat produced by the human body. Thanks to this, we achieve a warming effect. Why the Columbia Bugaboo™ Beanie: Omni-Heat™ thermal reflective   Manufacturer: Columbia Sportswear, USA Care instructions: machine wash at 30°C Material: Shell: 100% acrylic Lining: 100% polyester Omni-Heat Reflective™ Interlock Omni Heat Thermal Reflective (heat reflection) - helps regulate temperature by reflecting and retaining body heat, while allowing moisture to escape, which helps maintain a sense of comfort. The inspiration for the creation of Thermal Reflective materials came from the extraordinary properties of emergency aluminum thermal blankets. This innovative technology provides 20% more thermal insulation, while maintaining a high level of air and moisture permeability.