Backpack of Warmth

This backpack looks that of a standard adventurer pack with white wool sewn into it's interior.

While wearing this backpack, you feel the warmth flowing through it. The backpack keeps its contents safe and warm with the wool cushion bound to the interior. In addition, everything within the backpack is unharmed by temperatures as low as −50 degrees Fahrenheit.

Any attempt to remove the wool from the bag causes it to lose it's magical properties, reverting it to a normal backpack.

Notes: Utility, Exploration, Warding, Outerwear