The RS WARM TUBE is back this season with a lighter, more structured fabric but the same high levels of warmth and comfort. With an optimized fit and soft handfeel, this tube feels just right during gentle workouts and fast-paced races alike. Perfect for Nordic skiing.  Merino blend lining A lightweight layer of technical fabric lined with soft fleece keeps your head or neck cozy and comfy With understated stripes and a great fit, it looks and feels good however hard your heart pumps This tube keeps the air circulating, so your temperature stays just rightnot too hot, not too coldeven during those tough, high-cardio outings Weight 45 g Materials Body lining: 52% Wool, 48% polyester Body: 100% Polyester