The Rev\'It Freeze Two Windproof Neck Warmer is packed with features... ERGONOMIC Features Stretchable Moisture Wicking Function Overlock Seams - A seam made of an overlock stitch, which is sewn over the edge of one or two pieces of cloth to provide edging. Fit Ergonomic Fit PROTECTION Outer shell Mesh REV\'IT! WindBarrier - The REV\'IT! WindBarrier membrane is laminated between two separate layers of fabric: a stretchable outer layer, and a soft fleece inner layer. This combination blocks against wind and helps repel water. Stopping the wind and rain helps prevent hypothermia, and improves a rider\'s level of comfort and warmth. Waterproofing & Breathability Water Repellent Highly Breathable