MicronOne Gusseted Anti-Allergen Pillow Level 4 White / King Memory fiber fill exhibits a memory like response while retaining softness and lightness Hypoallergenic fiber fill with MicronOne fabric reduces buildup of allergens for a cleaner sleep Certified and clinically proven to block dust mites spores pollen pet dander and bed bugs Firm support with gusseted edge is ideal for side sleepers and those who need extra support Filled and finished in the USA from imported materials