These pillows are small, so the don't fit our Cali king/king pillow cases at all, but they are wonderful. The small cubes of memory foam are perfect compared to one large piece. I have been very diligent about fluffing them when I make the bed and they bounce right back to think fluffy little pillows. Now when I say little, they are normal sized, they just are a tad shorter than the ones we had prior from Wal-Mart. But they aren't to hard or too soft.