Winter headwear makers in mainland China and Taiwan are focusing on improving the warmth-retention features of products by using different types of fabric.

Among the popular materials are twill, corduroy, polyester and cotton-nylon blended fabric. These are being used on beret, bonnet, newsboy and bucket styles.

Wool is the choice material for high-end models. Aside from its excellent warmth-retention properties, the material also repels stains and has a soft feel.

For midrange and low-end models, acrylic is most often used. It has almost the same softness as wool but is less expensive and lightweight.

Makers are also developing models using bamboo-charcoal fiber. This environment-friendly material resists build-up of bacteria and odor, making it ideal for hats and caps.

Suppliers, however, are not putting comfort over fashion. Products come in a wide array of bright colors. Models also feature striped and checkered patterns and printed designs.

To increase variety, products are trimmed with faux fur and synthetic leather while other models feature knitted flowers, plastic beads and button and metal studs.