Warmest Base Layers

Warmest Base Layers. When the weather bites hard and you need a really effective thermal foundation layer, pick one of our Thermal Warmest Base Layers.  For extreme cold conditions such as Arctic Adventures where  the right Warmest Thermal Base Layer is critical to those requiring effective layering for passive activities.  From Merino Wool Base Layers to Compression Base Layers for active sports.  Extra Warm Warmest Base Layers for life in the cold.