Flattening the Court, a note to help you enjoy Basketball Guys: The mat will have some creases when you take it out of the box. As it sits out on a hard, flat surface, the creases will smooth out. The mat can be ironed directly on the BACK of the mat on medium. Please use caution as you must iron on the BACK only and care should be taken as the plastic of the mat will heat up quickly. Only adults should attempt this. To keep your mat smooth instead of putting back in the box just roll it up lengthwise and slide it under the handle of the box.