The Hocosa Women's Organic Wool-Silk Long-Sleeve Shirt is a top-rated base layer top for women on Amazon. Made from a blend of organic merino wool and silk, this shirt offers exceptional warmth and comfort. The natural fibers of wool and silk provide excellent insulation and moisture-wicking properties, keeping you dry and cozy in cold weather. The shirt features a crew neckline and long sleeves, making it suitable for layering under your clothing. The organic materials used in its construction make it an eco-friendly choice. If you're looking for a high-quality and sustainable base layer top, the Hocosa Women's Organic Wool-Silk Long-Sleeve Shirt is an excellent option.