Built with a four panel crown construction and breathable, moisture wicking microfleece materials, the Peruvian Hat provides exceptional warmth and comfort thatll keep you equipped to handle cold climates with ease.. . This product will be shipped directly from Outdoor Research and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. WINDSTOPPERAR 3L 100% polyester microfleece. Breathable and moisture wicking properties. Ear flaps with chin cord for adjustable fit and coverage. Four panel crown construction for enhanced fit. 1.9 oz. total weight.