This pillow is pretty much perfect for me.I'm a side sleeper and I broke my collar bone quite badly a few years ago requiring surgery. It's still week and if I lay "heavy" on that side it ends up hurting.I've spent ages looking for a pillow that will support my head and keep me from crushing down over night and sinking into that collar bone.This pillow retains it's height, which is also about spot on for my shoulder. It's firm and supportive, but also has, for me, just the right amount of give so it feels super comfy unlike a few foam blocks I've tried before!Although it's foam/solid it's also not left me with a really hot sweaty head in the recent heat, which I expected from a foam pillow, which was an extra bonus!If you want a super-firm supportive pillow that's also comfy to rest your head on - I'd recommend this one!