Esterna Vinyl Dipped Float (Yellow) World's first customizable temperature regulated mattress allowing you to cool to below 60F and heat above 110F Studies repeatedly confirm the most restful and rejuvenating sleep temperature is between 60Degree and 68DegreeF Very energy efficient, each control unit averages only 80 watts, providing a great night's sleep Zero electricity or electromagnetic frequencies in the mattress Natural way to sleep deeper, sleep longer, sleep better, and have increased energy Offers customized comfort, the soft top adjusts for a plush luxurious feel Two chamber air system Soft Touch release valve for the ultimate in comfort Built In hook and hold system allows you to connect with others Includes lifetime guaranteed repair patch and limited warranty