heated vest for women, adorllya womens heated jacket neck heating jacket washable outdoor apparel adorllya <b>fit note: this style runs small, we suggest sizing up.</b> <br>100% nylon, perfect tie, upgraded smooth neckline design to avoid rubs or stiff on neck. <br>red light ---- highest temperature <br>white light---second high temperature <br>blue light ---- lowest temperature <br>plug it to power bank,long press the button 3 second, it will gradually heat up. <br>please keep connecting to your power bank when using. <br>there is a pocket on the inside with a plug in it, so you can turn on and adjust heat without to taking battery pack out. <br> at the top left is a push button that cycles through three different heat settings