Our quilted VÆTREX™ -30° Jacket Liner has 1/2" thick open cell foam insulation. The VÆTREX™ -30° Liner is designed for temperature ranges of +10° F to -30° F. The VÆTREX™ Liners have been proven superior in an extensive blind test performed by the UNIVERSITY OF NORTH DAKOTA. The results of that test concluded: "OUNCE FOR OUNCE, VÆTREX™ IS THE MOST EFFICIENT INSULATING MATERIAL CURRENTLY AVAILABLE." VÆTREX™ is the ideal product for any winter activity.


• The VÆTREX™ Liners are designed to be worn directly against the skin, but can be worn over a THIN layer of polypropylene/polyester underwear. No natural fiber (Cotton, Wool or Silk) underwear/other garment is to be worn under these liners.

• Use these Liners with an outer garment such as our Arctic Parka Shell, EXP Waterproof Parka Shell and EXP Waterproof Bib Pant Shell.