Both my daughter and myself bought the linen and FibreCool versions and we have nothing but praise for these pillows. They provide great support at the customized height and width that are suitable for us, making our sleep so much better ever since. Personally, I have been having neckache and shoulder ache as a side sleeper, and just one night on the pillow, the ache pretty much went away and I felt so refreshed the next morning. Very thankful for the invention of this product. Keep up the good work!