Montane Duality Mountain GORE-TEX Cap The Duality Mountain Waterproof Cap is a lightweight GORE-TEX mountain cap, to keep you dry and comfortable on your next adventure. Utilising 40 denier GORE-TEX Performance Technology, the Duality Mountain Cap is highly waterproof to ensure full protection for your head in changing weather conditions. The GORE-TEX membrane repels water and rain from entering, therefore ensuring constant comfort, and taped seams further prevent water from seeping through the garment. Alongside this, the hat has an internal microfleece lining to provide you with moisture-wicking comfort. This works by effectively removing excess sweat and moisture from the surface of your skin, dispersing it through the construction of the cap, therefore ensuring you remain dry and cosy from start to finish of your adventure. The garment has integrated ear flaps to keep your ear warm and cosy, protecting them from windchill and a pre-curved stiffened peak to prote