Thinsulate is a synthetic fiber developed by 3M. It was first marketed as a more cost efficient alternative to down and it was advertised as twice as warm as any natural fabric. Thinsulate is also a key material of the Regatta Thinsulate Hat. This hat is made of 100% soft-touch acrylic. Soft-touch acrylic is plastic. That’s right, this hat is made of plastic yarn. But you’ll never know it. Acrylic may be plastic but it looks like, feels like and behaves like wool. Adding to the warmth of the Thinsulate is a thermal balance microfleece. Microfleece is a polyester based fabric with a cut surface that has a pile texture. The fibers of microfleece catch air and generate warmth. This is the perfect headgear for a winter walk or simply for extremely cold environments. Please note that the samples shown above may not exactly match the colours on the actual product.