TWO DIFFERENT SOFTNESS FOR CHOICE: The blue memory foam layer is soft while the white memory foam layer is medium firm. You can choose the softness of the layers to achieve you ideal support! Buy one only get one layer, not two layers you will get! GOOD IDEA AS THE PILLOW'S FILLER – Or DIY YOUR OWN PILLOW!: Its size is 23.6x14.2x1.2 inches. The memory foam layer can be used to elevate your pillow if you feel your pillow's height is too low. At the same time, you can purchase multiple layers with your spare pillowcase to customize your pillow. We recommend two layers for stomach sleeping and 3-4 layers for side and back sleeping. INNER PILLOWCASE FOR LONGER SERVICE LIFE: Each layer of memory foam is equipped with an inner pillowcase, which can protect the memory foam from being torn. It also prevents memory foam from yellowing. EXPLANATION OF MEMORY FOAM'S ODOR: When you open the package, the pillow may still have a "foamy " smell because we packaged it quickly after producing. Our memory foam is certified by CertiPUR-US. Using the pillow directly is not harmful. If you really mind it, You can take the pillow core out of the pillowcase and let it air out for 2 days or wash the pillowcase. This smell will fade away. LOFE - LOVE LIFE, LOVE SLEEP: The brand LOFE is originated from the meaning of LOVE LIFE. Bring LOFE(LOVE LOFE) contour pillows to home, let you LOVE SLEEP . We are a small company specializing in the development of pillows, such as buchwheat pillow, kid pillow, contour pillow and so on. Our factory has been producing a number of pillows for more than 20 years. We always start with what our customers want and find a way to meet their needs. We try our best to develop contour pillow through 1000+ tests. If any issues with your LOFE contour pillow, our friendly customer service team is always ready to help. It is our priority for your satisfaction! A Cooling Pillowcase for Contour Memory Foam Pillow