Mattel Memory Foam Bed Pillow, Twin, White PATENT DESIGN- Standard Size (Measures 24" x 16" x 4.5"). Ultra Soft Removable & Washable Cover - 65% polyester and 35% tencel; Breathable Inner Cover - Jersey fabric SAFE PILLOW - Foam is CertiPUR-US certified for safety and performance. This pillow does not contain any toxic ingredients like formaldehyde, methane chloride, or PBDE and provides a protective barrier against allergens such as mold, dust mites, and other bacteria SQUARE DESIGN - Suits back, side and stomach sleepers, but the level of pillow loft varies from individual to individual due to personal sleep position, head size/weight, overall body size/weight, shoulder width (side sleep), etc AIRCELL GEL-INFUSED DUAL SIDE COVERS - One side (50% ice fabric + 50% polyester) create a fabric that is incredibly silky, soft and light for cool summer sleep experience. The other side: 65% polyester and 35% tencel for winter GEL-INFUSED MEMORY FOAM helps you reduce pain and stiffness, and ease neck and shoulder pain through all night. In case you experience an odor which is a "Fresh Foam" odor, it is not harmful. The odor should dissipate within 20 minutes from when the foam is unpacked and aired out