from typing import List


def simple_clean_cells(cells: List) -> List:
    """
    Removes cells that lack a bounding box or have a volume equal to 0

    Args:
        cells: List of spatial features

    Returns:
        List of spatial features

    """
    return [cell for cell in cells
            if len(cell.get_bounding_box()) == 4 and cell.get_volume() > 0]