While combat armor advancements have increased soldiers’ survival rates, modern weaponry ravages warfighters’ extremities, causing massive trauma and tissue loss, 2/3 of the 10,000 combat injuries in Iraq and Afghanistan afflicted patients’ limbs. Inducing local hypothermia upon injury would prolong limb viability, lengthening the window for soldiers to obtain restorative and regenerative care and thereby avoid amputations. The team has developed a lightweight, easily deployable, evaporative cooling wrap to induce therapeutic hypothermia on the battlefield.