Klättermusen offers a wide range of insulated jackets suitable for a variety of outdoor activities, either made with down or synthetic insulation. Each jacket is specifically designed to be worn either as an outer layer, over your shell jacket, or as a mid layer. Most of our insulated jackets are made to be lightweight and packable to give you maximum versatility in its usage. The activity and conditions determine which jacket is right for you.

Heat Conductivity Resistance (HCR)

To help you navigate insulated jackets in terms of warmth, Klättermusen has developed the Heat Conductivity Resistance (HCR) system. HCR is a performance value for Klättermusen insulated jackets that considers insulation materials, external conditions, and body temperature sensitivity. The system allows you to optimize for the perfect warmth to weight ratio in its usage. Learn more about HCR.

Synthetic Insulation vs Down

For our synthetic insulation we use PrimaLoft®. PrimaLoft® is ideal when you want to stay warm in damp conditions or during intense activities. The combination of breathability, warmth and water resistant thermal efficiency makes it an outstanding companion during any activity and weather.

Down is hard to beat when it comes to the warmth-to-weight ratio and the ability of trapping air makes it an excellent insulator, even in temepratures below -25°C. Down is however sensitive to humidity, when the down is exposed to damp conditions it loses its ability to insulate air. Down is therefore ideal in dry conditions. If you want the benefits of a down jacket in damp conditions, we do offer water resistant down jackets. Our down products only use 750+ fill power goose down for premium quality.