When cutting winds threaten to sap your core warmth, the Terrex Agravic Windlatz steps in as a shield designed to keep you striving for higher altitudes without weighing you down. Fitted with Formotion technology that follows your natural movement to retain range of motion. Highly lightweight weave for decreased bulk while hiking. Nylon tricot offers abrasion resistance. Windproof protection from the elements. 100% nylon.