A floor mat is positionable in front of a vehicle seat on a vehicle floor of a vehicle having at least one structural member that contacts the vehicle floor and is disposed rearward of a front edge of the vehicle seat. The floor mat includes a main body and an engagement structure. The main body has an upper surface, a lower surface, a first end, and a second end that is longitudinally spaced from the first end. The engagement structure is defined at a peripheral edge of the main body between the upper and lower surfaces. The engagement structure has a first edge portion that extends in a longitudinal direction and a second edge portion that laterally extends from the first edge portion. The second edge portion is positionable to engage the at least one structural member to restrain horizontal movement of the main body in the longitudinal direction.