I’m giving these 5 stars even though they aren’t “cooling” so that should tell you how good these are. They are like laying on clouds, so comfy and give some resistance not just mush or too firm. 

I think they’re perfectly filled so I didn’t feel inclined to add any more stuffing! But come on, that’s so awesome you have that option in the first place. They actually send you little bags of stuffing to fill for your preference. I love that! Best purchase from Wayfair recently. So happy with these.