Abstract: A system for warming of a user includes the first torso warming device to warm the torso of a user, the first torso warming device including a first strap to connect the torso warming device to the user.

Abstract: A rewarmer is made from a flexible material that can be laid flat. The material has a central portion that covers the back of a person lying supine on it, at least one left flap that can be brought over the left side of the person, at least one right flap that can be brought over the right side of the person, and a way to hold the left flap and the right flap together. There is an electrical resistance heating element within the flexible material and the electrical resistance heating element can be connected to a source of electricity. To use the rewarmer to treat a person who is suffering from hypothermia, the rewarmer is laid flat on a substantially horizontal surface. The person is placed supine on the rewarmer, so that at least one left flap is on his left side and at least one right flap is on his right side. The left flaps are attached to the right flaps over the torso of the person and the electrical resistance heating element is connected to a source of electricity.