Model: HAT-132 100% Acrylic Detachable pom pom One size Cosy and warm navy beanie ARAN TRADITIONS Acrylic Beanie Hat. Accessorize in style with this warm navy beanie crafted in soft acrylic. It features a detachable pom pom. Wear it when the weather turns colder to instantly add a stylish finish. Aran Traditions presents a collection of cable knit accessories, inspired by Arran Isles craftsmanship. Classic cable styles are given a contemporary twist to create a modern heritage range of hats, scarves and mittens.