509 FZN LVL 1 Base Layer Pant Size:XS this low-profile base layer offers

this low-profile base layer offers minimal restrictions with maximized benefits

84% polyester

Built-in FM radio tuner with a station scan-and-save function

rustproof and BPA-free

509 FZN LVL 1 Base Layer Pant Size:XS this low-profile base layer offersStay 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 our lightest base layer, the 509 FZN Base LVL 1 Pant a close fitting next to skin layer designed to actively wick away heat robbing moisture so you stay dry and