Cloak of comfort

A cloak of comfort was an enchanted item that imparted a feeling of perfect temperature to the wearer.

Powers
The wearer of a cloak of comfort experience the perfect ambient temperate for study, relaxation, sleep, and other such activities. The cloak absorbed heat and cold from natural or magical sources such as the sun and imparted them to the wearer. Thus the wearer was also protected from any heat or cold-based spells or other magical attacks that caused harm by raising or lowering the temperature. Impact spells such as fireball and ice storm would still harm the wearer but not to their full extent.

Since it retained heat, a cloak of comfort would be clearly outlined by a creature viewing it with infravision. When wearing a cloak of comfort, it was impossible for the wearer to suffer the ill-effects from hypothermia.