The peel and stick heating pad for back is designed with premium adhesive that can stick firmly. It can heat up instantly after opening the packaging bag. The waist warm heating patch can provide up to 10 hours of warmth. As one of the best factories of heating pads for back, we can custom the heating duration time according to your requirements. We can provide free samples to you. And, you can also send the sample to us for testing, then we can custom waist warmers of the sample quality with your company logo.