The large entry indeed makes getting in & out of the bivy super easy. Really like it a lot.
Plus, the bivy is spacious enough to place a closed-cell foam pad, whereas the other bivy is sometimes too tight if you do that.
I could move around freely when I was inside the bivy with the pad installed.
I did the same with an air mattress (Sea to Summit Ultralight Insulated Air Sleeping Pad, 2 in / 5 cm thickness), and it was still very spacious inside.
Recommend this bivy to anyone looking for an ultralight yet versatile solution.