Cool T Cooling Base Layers
All Active Cooling Sports Base Layer
Budget Basic Base Layer
Factor 1 Thermal Base Layer
Factor 1 Plus Seamless Thermal Base Layer
Merino Wool Seamless Thermal Base Layer
Meraklon Basic Thermal Mid Layer
Factor 2 Technical Thermal Mid Layer
Childrens Thermal Underwear
Lightweight Windproof Jackets
Softshell Technical Windproof Jackets
Polar Fleece Technical Thermal Jackets
Down Technical Insulated Jackets
Primaloft Thermal Synthetic Jackets
Head Gear Thermal Hats, Neck Tubes and Balaclavas
Gloves Thermal Hand Protection
Socks Thermal Foot Protection

You are here: Factor 2

Thermal underwear mid layers main purpose is to is to provide insulation that will retain body heat. It also should allow the continuing transportation of moisture to the outside layer.

Sub Zero Factor 2 thermal underwear mid layer is regarded by many outdoor enthusiasts and professionals as the most advanced insulating layer available currently on the market.

Click on an image below to see the full range

You are here: Factor 2

Factor 2 Zip Turtle Thermal Underwear Mid Layer

Factor 2 Long Sleeve Thermal Underwear Mid Layer

Factor 2 One Piece Suit Thermal Underwear Mid Layer

Factor 2 Bloo John Thermal Underwear Mid Layer

Factor 2 Long John Thermal Underwear Mid Layer