Question:
When the bench folds flat, is there a small gap where it folds or is it smooth? Is the bench comfortable on the back for exercises like hip thrusts?
Answer:
It has a 2 inch space when it's flat. The bench is comfortable. I got it a few weeks ago and I like it so far.
Question:
How can I adjust the angles of this workout bench?
Answer:
It is very easy. You just need to lift the support frame at the back of the cushion and put it in the corresponding groove. It is very convenient to adjust the angle of this weight bench.
Question:
How high off the floor can the bench be in a totally flat position?
Answer:
Height is about 8" when completely collapsed down. Very sturdy and not wobble at all.
Question:
When the bench folds flat, is there a small gap where it folds or is it smooth? Is the bench comfortable on the back for exercises like hip thrusts?
Answer:
small gap when it's open to use. Don't know about the hip trusts, sorry.

