but how do we do this? we start with something like this. it limits the method of heat that comes into the unit. and then instead of adding us to make a call, we actually have an internally built layer of water on the inside that we give it a very low pressure which makes the water evaporate at a very low temperature. five degrees celsius. the perfect temperature for vaccine storage. >> glenn is a nurse and vaccinate her where only eight of 21 health -- where they have any form of refrigeration. >> -- now this month, in september they expect to be able to reach 120 vaccination size to to the capabilities of this cooler. our goal is to reach all investigators and give them this point technology in order