The Purple Harmony Pillow comes in a few different loft ranges, but the choices are separated by one inch each, based on the Purple Web page at my time of order. However I recognize the different options, a one inch variation could be the distinction between a size 6 https://zenflufftopmemoryfoampill04736.blog2news.com/31602109/the-fact-about-zenfluff-cooling-memory-foam-pillow-that-no-one-is-suggesting