Hotte pour lit chat

Oh, I wish so much that my cat could fit comfortably in this soft & beautiful cube. He is an average 11-12lb male. He tried a few times, but almost got stuck in the too small opening. He could curl up inside and rest his head on the floor in front, but he didn't use it very often. I took my scissors & made the opening larger, then sewed it...he still didn't use it. Then I cut another large opening in the back & sewed it Now he'll jump through it, or lay through it now & then. Please make this cube & opening in a triple larger size & I'll buy another! Thanks! P.S. I love the colors!