Our Women’s Merino 150 Base Layer Bottoms are the perfect layer to put on for your warm-weather adventures. Made of lightweight, breathable Merino, these base layer pants have an updated fit that improves functionality, while enhancing aesthetics for a wide range of body shapes. We wrapped our soft Merino around a nylon core, giving it added durability so it can keep up with you. Wherever you're going and whatever you're doing, our lightest weight and best base layer bottoms are perfect for adventures during all seasons.