I have the worst luck with pillows, having spent anywhere from $20-$150 on a pillow, I have yet to find one that does not flatten out after a few weeks. These pillows are no different. Within 3 weeks, they were completely flat and are now in the trash. I bought king size, so I am not sure if that makes a difference. I have moved on to purchasing standard size in hopes of having a good night sleep, but not of this pillow.