Took a little longer than expected and the pillows came less filled than the smaller size of the same pillow unfortunately. The small size I gifted to my father and ordered the queen size deciding I needed them larger. They had less than half of the fluff of the smaller ones, which was upsetting because I like an overly stuffed, puffy, HARD, pillow and there wasn't nearly enough fluff, but there's no way to get these back into the vaccine sealed tint box to return. My dad said his wede too firm, mine were too soft, and the sizes were wonky. Wasnt able to return but I wish I couldhave. I wanted it to be as firm and puffy as my dad's for propping up my neck and back in bed. For side sleepers, it really depends on how you like your pillow and how yours arrive. It's nice to be able to remove fluff if you like a flatter pillow, but that's not my situation. I like to double or triple stack regular pillows and I was hoping not to. I didn't notice anything regarding the cooling technology stated but it could just be me.