Based on the description of the polygon, it has four sides, with the left side slanted inward and the right side being perpendicular to the top and bottom. The presence of the small arrows on the top and bottom sides suggests that they are parallel, which is a characteristic of trapezoids.
Since the right side is perpendicular to the top and bottom (implying that there is a right angle), the polygon satisfies the conditions for it to be classified as a right trapezoid.
Therefore, the most specific name for this polygon is:
right trapezoid.