I needed to replace my down pillows so I thought I’d try GhostBed-flux down pillows with their silk cases. Pillows only come in one size. Standard size. I’m used to king but it’s ok. It’s soft and also has some support. Kinda loses shape a little towards bottom so you do have to reshape them. I personally haven’t felt any special relief or cooling from the pillows. I do like the fact they are all machine washable, although haven’t tried it yet. Hopefully it holds. Otherwise I think they are just soft smoosh pillows.