Establishing the right temperature range of our garments is no easy task. Many factors are capable of affecting insulation requirements. Aside from the actual temperature itself, two key factors include wind intensity and activity level. High wind speeds can always intensify the effects of low temperatures - the so called wind-chill factor - and everyone knows, activity has a dramatic effect on our metabolic rate, capable of raising it by 500% and more.

Higher metabolic rate means higher internal heat production. This is why we prefer not to give you a precise temperature range for our jackets, but only a general idea of how warm each type of Parajumpers coat can keep you, considering the following features that effect the jacket's performance in cold weather:

Amount of down fill (if the fill power is the same, more down means more warmth)
Fill power (with the same amount of down, the higher the fill power, the warmer the coat will be)
Weight of the shell fabric (heavier fabric is usually more tightly woven and, therefore, protects you from the wind)
Coatings (A coated fabric has even better windproofness).
Of course, within the same family of jackets, a short style without hood will keep you less warm than a longer model with a hood and fur trim. We hope this guide will help you choose the right Parajumpers jacket for your type of climate.