Its double walled construction maintains beverage temperature for hour while the ergonomic resin handle ensures comfortable grip during use Features intricate machine tooled pattern, this coffee mug double as a collectors item for automotive memorabilias enthusiasts and make a great Fathers Day or car club event Designs for motorsport fan, this mug appeals to coffee lover who appreciate mechanical aesthetic in their daily routine Engineered for durability, this 304 stainless steel insert resin coffee mug combines engine pattern with a finish, perfect for automotive enthusiasts seekings long lasted drinkware Transitioning seamlessly from desks to campings trip, the stainless steel cup keep drink hot / cold during commutes, hikes, or garage workshop