Stay warm and dry in the harshest conditions with 509’s Active Layering System featuring Cold Armor technology. Pairing 509’s base and mid layers with 509’s outerwear creates a high-performance layering system that works together to keep you comfortable no matter what. The system starts with 509's lightest base layer, the 509 FZN Base LVL 1 Shirt—a close fitting next-to-skin layer designed to actively wick away heat-robbing moisture so you stay dry and comfortable all day long.
Features:
- LVL [1] - Our lightest next to skin base layer
- Lightweight, moisture-wicking polyester technical material
- Comfortable brushed interior fabric
- Sized to be fitted. Size up for loose fit
Specs:
- Material : Cold Armor Polyester
- Warmth : LVL [1]
