Experience
I bought this pillow through Brooklinen to try out in the hopes that it would be a "perfect fit" for some of my sleep-related neck issues. It has what they call "adjustable firmness" since there are 2 zippers on both sides that you can zip or un-zip to customize how firm it's supposed to be. I think it's a clever idea but in practice, it doesn't feel much different than other alt-down pillows I've tried. I'm not a big fan of the zippers in real life either, it just seems counter-intuitive to have zippers near my face (even though I put a pillow case on it of course). It's overall just an ok pillow, not really worth the hype or price for me, I'll end up returning it.