The key to staying warm isn’t finding the bulkiest jacket. Rather, it’s about sticking with a streamlined thermal base layer that traps body heat. As the temperatures drop, this two-layer shirt uses performance polyester on the inside and a merino exterior to do just this, whether you’re on the jobsite on a cold day or have a long trip planned.

• Outer layer is a 70% polyester/30% merino wool blend
• Inside is made out of 100% performance polyester
• Designed to trap air and body heat, so you stay warm
• Flat seams eliminate chafing
• Extended tail for more coverage
• Tagless collar reduces irritation
• Imported