A warm, breathable base layer top built for cold-weather adventures.

The Route Merino Warm Base Layer Top is ideal if you:

• Need extra insulation without sacrificing breathability
• Prefer a stretchy fit that adapts to all your movements
• Want the natural warmth and comfort of merino wool

The Route Merino Warm Base Layer Top is a high-performance layer designed to keep you warm when the temperature drops. Made from a soft and stretchy blend with 75% merino wool, it offers excellent insulation, natural odor resistance, and reliable moisture management. Merino mesh panels under the arms provide targeted breathability where you need it most, preventing overheating during high-intensity activities. With its crewneck design and slim fit, it layers easily under mid-layers and jackets, making it a versatile piece for skiing, hiking, or winter training. If you’re looking for a durable base layer that delivers dependable warmth and comfort in cold conditions, the Route Merino Warm Base Layer Top has you covered.