The high-wear areas such as knees, shoulder and elbow have two layers of WarmWool material, while the areas that expel the most moisture have WoolNet as the inner layer. This DoubleWool Jacket is suitable for wear throughout the year and can be layered up for additional warmth and insulation in the colder months, and is the perfect jacket for long hikes and walks. Key features: Two layers combining WoolNet and WarmWool Wicking Material Insulated Odour-inhibiting Temperature-regulating Specifications: Material: 320G Soft Merino Wool. Second layer: 100% Merino Wool. Liner: 80% Merino Wool and 20% Polyamide. Our Aclima Men's HotWool Jacket is a thicker option and is the perfect alternative to a traditional fleece.   Aclima Men's Doublewool Jacket