Amazing for one week! Not so much after.
I bought the Marlow pillow to bring with me on a weeklong vacation and it was incredible. However, I noticed that a few days after, it didn’t hold its loft as long and the time between me fluffing it and it deflating got shorter as the next week rolled around. I fluff it daily but had to redo it when I woke up in the middle of the night from my head being in an uncomfortable position. I bought two as a set and the second one has already started following this pattern.