Feeling static shocks is normal. This is an electric heated jacket that is powered by a battery with heating elements throughout the jacket. When your arm or a part of your body rubs against the jacket, you may feel some static. There are times when you touch your refrigerator or your car and you felt some static shock but you know it’s not defective. With that said, the jacket is safe to wear as it has been test extensively. Our CEO Bryce Fisher has jumped into a pool with the jacket and came out safe and sound so you feel at peace knowing that you will stay warm and safe.