Embodiments of the invention include methods and devices for increasing blood flow and controlling the temperature of a mammal. The device generally includes collapsible and pliant body elements, capable of expanding from a first volume into an expanded second volume which can then be reduced from the expanded second volume into a pressurized third volume. One or more thermal exchange units can be positioned in the one or more collapsible and pliant body elements. Accordingly, the temperature of the extremity of a mammal can be regulated by providing heating or cooling to the one or more thermal exchange units.