Constructed from Berghaus\' AT Micro fleece, the Hartsop Fleece provides warmth and insulation without unnecessary weight. The velour micro fleece is made from 100% polyester and has a double fabric collar which shields your neck from cold weather. It all results in a lightweight, sporty and warm midlayer, allowing you to enjoy everyday outdoor activities for longer.100% polyester AT Micro fleece - cosy construction seals in vital heat to ensure that you remain warm and protected against cold snapsFull zip allows for manual ventilation and easy on/offRaglan seam sleeves - moves with the body to prevent chafingDouble fabric collar - designed to keep the chill off your neckVersatile design - wear alone or under a shell in poor weather conditions