Material:Kevlar fiber, Slim heating film,Heated rapidly and evenly.Waterproof Rating:IP67,widely used for most 12V motorcycles, ATV, scooters etc Working temperature??-40??F~194??F ( -40 degree- 90 degree),Power:High temperature??26W,Middle temperature:20W;Low temperature:13W;Pad dimensions: 12.5 x 10cm. Press the switch and hold for 5 seconds, the power-on indicator is on, ,over voltage protection intelligently,With 3 positions to controal the tempereture,no-slip and abrasion resistant. Washing in water approved,easy for Installation,including: 2 x Heated grip pads (with connection wires and on/off switch). 8*Strapping tape Usage :Connect this Heated Grips Warmer pad to your 12V battery,and it will be heated up in about 1 minutes,it will keep your hands feel warm of the whole winter.DIY creativity, easy to install, just stick on handlebars. Parameters 1.Suitable for handbar with diameter between 30mm~36mm(1.18in~1.42in) 2.Working temperature:-40??F~194??F