Active Insulation

Built for speed and breathability, Patagonia’s Nano-Air Ultralight Hoody keeps you warm without overheating—just don’t expect hand pockets. Patagonia says:  For cool, high-output days when you need breathability and just a touc…

This is a solid, streamlined choice for those who move fast but still want insulation that breathes. Montane says:  The women’s Sirocco Lite is more than just a hoodie. It offers active insulation to elevate your fast-paced adventures by..…

A streamlined hybrid layer that balances warmth, breathability and movement for fast days on the hill. Montane says:  The ultimate lightweight thermal regulator, Primaloft Gold Active Vent insulation works alongside our FEATHERLITE Air fabric to…

UOG TOP PICK: Light, breathable, and packable, the Mountain Core Jacket provides active insulation that strikes a balance between warmth and airflow — an ideal mid-layer for cold, fast-paced mountain days. OMM says:  The Mountain Core Jack…