The ThermoFlex Jacket (previously Thermolite) has been specifically designed to provide maximum core warmth and comfort without the bulk of traditional insulated jackets. Ideal for alpine hunting when you’re likely to be static and glassing for extended periods in extremely cold climates. Highly packable, the ThermoFlex Jacket compactly stores in it’s own stuff bag, allowing you to have a high insulation layer ready to go for when you slow down on the hill or for when you’re back around camp during plummeting temperatures. Weight: 1005 grams