Simple, Reliable, Powerful....We are excited to announce preorder-sales of our new and improved Mattress Cooler Deluxe....the ONLY Thermoelectric cooler on the market with the power to cool two adults with a single affordable water cooler.Designed and manufactured in the US (with globally sourced components of course) by a leading thermoelectric cooling expert, this unit represents the future of sleep cooling systems....not by adding expensive gimmicks like sleep tracking and phone apps, but instead by making sleep cooling systems affordable enough for everybody who wants to sleep better and save energy.Our new Cooling unit chills water to a temperature you select and circulates it through a thin cooling pad placed on your mattress and under the fitted sheet. By directly cooling just you instead of the whole house, you not only get a much better night's sleep, you can save energy all night long. This box set ships with a cooler, and 2 units of our 12x24 pads .**We get a lot of questions..."how cold can it get" With a small pad covered by a blanket...pretty close to freezing, but this is actually the wrong question. Chilling a few pounds of water to near freezing is a nice talking point but what REALLY matters is what happens when you add a heat load...like 300-400 pounds of 99F humans putting off 500 BTU of extra heat per hour...that is the real design criteria for a sleep cooling system.The ideal water temperature given the thermodynamic properties of our cooling pad is right about 70F, +/- a few degrees depending on your personal preference. This gives us a nearly 30 degree delta between body temperature and coolant temperature, more than enough to pull away the body heat trapped in the sleep envelope. You can set it lower, but most will find it too cold after a few minutes and if you go too cold you can run into issues with condensation.Features:Simple, Reliable, PowerfulThermoelectric RefrigerationCoolingMinimal nightly water usageMonthly required water flush20-225 WattsSet Thermostat from 60F-80FSimplest Operation/ MantinenceMade in USA Mattress Cooler "Deluxe" Chilled Water Sleep Cooling System - New