Z Convolution Gelled Microfiber with Removable Memory Foam Pillow - White (Queen - High Loft). The convolution pillow is a great choice for multi-positional sleepers because it offers three different support levels to complement any sleeping position. The air dough Memory Foam conforms to your weight and pressure to help alleviate sleeping pains. Open cell construction makes the pillow more durable and ensures the pillow will maintain its shape. Antimicrobial Pillow Material: Tencel Fill Type: Down Alternative, Memory Foam Cover material: Tencel Pillow Type: Bed Firmness: Medium Cover: 100-percent Tencel lyocell Fill: 60-percent polyurethane gel foam, 40-percent siliconized polyester fiber Dimensions: King: 16 inches wide x 35 inches long x 7 inches Queen: 16 inches wide x 29 inches long x 7 inches Standard: 16 inches wide x 25 inches long x 7 inches Memory Foam Tips: Remove from packaging within 72 hours of receipt to maximize memory foam expansion. This product arrives very tightly packed. Unwrap and allow 48 hours for this product to return to its original shape. Being sealed in plastic packaging sometimes traps odors. After unwrapping, allow product to air for a few hours. Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product. Due to the nature of Memory Foam the firmness level of every item is unique. Please be advised that even similar products may produce different firmness results. Once opened this product is non-returnable.