When you're outdoors in the winter, you need a trusty hat to keep you cosy. The smart Thinsulate Acrylic Hat will do the job. It comes with a Thinsulate lining to lock in warmth and a comfortable stretch fabric that creates a convenient one size that fits all. Mens winter hat with Thinsulate thermal lining. Choice of 3 colours. One size. Machine washable. 100% Polyacrylic. This warming beanie-style hat is a great solution to outdoor working in the winter months. Knitted acrylic is comfortable and fits securely, while the Thinsulate lining locks in heat to keep you cosy and warm. Features and Benefits Constructed from stretch fabric for a one-size-fits-all solution Comfortable knit style for prolonged wear Thinsulate technology locks in heat for comfort in cold working environments