Inner:Dual Merino Half Zip is a technical wool base layer carefully designed for adventurers seeking the highest level of technical performance and comfort. Its extra-high drop-down collar and extra-long 2-way zipper ensure you stay comfortable and dry during all your adventures! The double-layer knit construction weaves a wool-polyamide blend on the face with a soft polyester inner lining. This two-layer design not only enhances insulation with additional loft, but also improves moisture wicking. While wearing, sweat is quickly transported from the soft inner layer to the outer wool layer, keeping you dry and comfortable. You'll also benefit from all the natural advantages of wool: its excellent temperature regulation, natural odor resistance, and sustainable appeal. Whether you're braving the cold or just looking for everyday comfort, our Inner:Dual promises unmatched performance and comfort.