● 8 modes temperature control (77 ℉-140 ℉) for your different heat requirement ● 4 modes timing function (1 h/2 h/10 h/constant heat) for flexible and convenient usage ● Made of soft and comfortable polyester fibre ● Has good heat and crease resistance ● Designs with low-voltage heat function ● Detachable connector for safe and easy cleaning ● Hypo-allergenic and anti-bacterial ● Can be fixed on the mattress ● Four sizes can be chosen for you