A heavyweight, ultra-warm base layer designed for extreme conditions and cold-weather endurance.

Built for cold to frigid environments, the Women's Ridgeline Merino Full Zip Bottom 240 delivers exceptional insulation, moisture control, and durability. The dual-layer knit construction blends Merino wool, polyester, and spandex, ensuring superior heat retention while maintaining breathability and flexibility. Full-length side zippers allow for effortless layering and ventilation, while the ultra-soft Merino wool provides next-to-skin comfort and natural odor resistance. Designed for extended wear in demanding conditions, this base layer excels in performance, comfort, and reliability.