Keep comfortable on those cool morning or frigid night rides. Warm hands have a major impact on overall body comfort, and sometimes gloves just aren’t enough. Willie G. Skull design Thermostatically controlled grips have variable heat settings and automatic temperature monitoring to adjust to changing ambient temperature Grips remain at a constant temperature regardless of changes in outside temperature Self-contained control circuit and control knob means you have no additional switches or controller boxes to mount Shut on/off with ignition to avoid draining battery Glueless grip design allows grip removal if you change handlebars or motorcycles