509 - FZN LVL 2 Shirt vehicle mounting configurations & avalanche training on

configurations & avalanche training on the Mammut app

Made to hold up even on the roughest trails

you’ll want to be prepared with the Mountain Lab Bull Trout Backpack

Quick release buckles

but with some added durability

509 - FZN LVL 2 Shirt vehicle mounting configurations & avalanche training onDescription 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 509 FZN LVL 2 Shirt brings the heat by trapping warmth and wicking away heat robbing moisture with a tech fleece fabric that slides easily under your outerwear. A team