The greatest pillow ever invented. The Purple Harmony Pillow is the only pillow with innovative 360º Purple Grid™ Hex technology around a hypoallergenic Talalay Latex Core. The Harmony Pillow provides just the right amount of soft support you need. The Purple Harmony Pillow comes in two heights. The 6.5" is favored by back sleepers, side sleepers with smaller frames, and stomach sleepers. The 7.5" is favored by side sleepers with average to larger frames.