The Montane Adult Protium Beanie is made with Thermo Grid fabric, offering effective temperature regulation and warmth. The brushed back feels comfortable against the skin, making it versatile as a helmet liner or a stand-alone hat. This lightweight and warm beanie is perfect for all your outdoor adventures, ensuring you stay cosy and comfortable in varying temperatures. The Protium Beanie's Thermo Grid fabric offers excellent temperature control, while its brushed interior provides a warm, comfortable feel against the skin. This makes it versatile enough to be worn as a helmet liner or on its own as a hat. Thermo Grid brushed back fleece with stretch. Double thickness headband. Suitable for: Hiking, Walking, Mountaineering, Trekking, Trail Running, Fastpacking, Expedition, Ski Touring. Materials: 97% Polyester, 3% Elastane. Thermo Grid Fabric - Offers complete comfort and warmth. Versatile - Can be used as a helmet liner or stand alone hat. Material Composition - 97% Polyester, 3% Elastane. Weight - 40g.