CHILLY WINTER MUST-HAVE: Keep the body warm in winter without being restricted by too many layers. Suitable for men and women who enjoy outdoor activities.KEEP YOUR BODY AND HANDS WARM: 4 carbon fiber heating elements generating heat across the pockets, collar, and outer back. At the touch of a button, it delivers heat in seconds to the core body areas: Hands, neck, and mid-back; keeping the body as a whole at an optimum temperature while also providing pain relief to these key areas. 3 available heating settings can be adjusted with just a simple press of the button.All Products From Us Have Undergone Strict Quality Checks.if There Is Any Quality Problem Or You Are Not Satisfied With The Productcontact Us.we Will Give You The Best Solution.