Life is what you define it! This 590ml Defined First Responder mug features an original definition that gives new meaning to everyday life. This high-quality, extra large and durable stoneware mug makes a perfect gift for friends, family and coworkers who are on the front line! Dishwasher and microwave safe. Caption reads: first responder first re•spond•er [ furst-ri-spon-der ] , n. 1: a professional designated to provide immediate assistance during an emergency 2: a brave individual who risks their own well-being to come to the aid of others (see also: courageous, compassionate, unyielding, frontline, superhero).