Product Paramenters Unisex 3D Contoured cup sleeping mask blindfold with ear Sleep eye mask Mask Material100% cottonHeating MaterialGraphiteProduct Size22*9cmPacking Size26*16cmN.W.48gG.W.68gRated voltageDC 5V/1ARated power2.5 ~ 4.5W Features1.Mirco-USB invisible interface 2.3D grooves: no pressure on eyes, no influence on makeup 3.One temperature level at 45℃