Halfdays Fay Midweight Merino Top

Built for warmth from basecamp to backcountry, our Merino Base Layer Top delivers the perfect balance of softness, structure, and performance. Crafted in a midweight 270gsm blend of merino wool and bamboo, it offers natural breathability, insulation, and thermoregulation—keeping you warm without overheating, even during high-output days.

Designed with a women’s-specific fit and ergonomic design lines, it moves seamlessly with your body for layered comfort beneath shells, midlayers, or outerwear. Finished with a printed logo for a clean, understated look, it’s the foundation piece your cold-weather kit relies on.

Key Features

• Midweight 270gsm merino-bamboo blend:

  • 48.3% wool

  • 44.9% bamboo viscose

  • 4% spandex

  • 2.8% polyamide

• Naturally breathable, insulating, thermoregulating, and moisture-wicking

• Odor-resistant for long wear and multi-day use

• Women’s-specific fit for comfort and mobility

• Ergonomic design lines for a streamlined silhouette

• Printed logo detail

Warm, durable, and endlessly versatile—your essential first layer for cold climates and demanding days.