•TEMPERATURE RATING - Recommended use for temperatures ranging from -10°F to -50°F (-23°C to -46°C)•CLO VALUE - Rated at 2.3M THINSULATE INSULATIONDesigned with 200g of 3M Thinsulate insulation, this jacket traps heat for warmth in extreme cold, ranging from -10 degrees farenheit to -50 degrees farenheit -23 degrees celsius to -46 degrees celsius.