Cover: A mixture of cotton, polyamide and polyester. Top layer: You'll feel like you're floating on clouds with the ultra-soft Lilia Cloud Foam (volume weight 50)¹. This premium memory foam evenly distributes your weight across the surface, providing precise support for your head and neck. Pure Heaven Layer: A combination of high-quality visco-foam (volume weight 50) and cold foam (volume weight 30). This layer of foam was specifically developed for side sleepers. With two degrees of firmness, your head won't roll off the pillow when you're on your side but stay in a healthy and straight alignment. Forty Winks Layer: This middle layer of foam is soft, highly adaptive, and lends the Forever Pillow the necessary point elasticity². In addition, this foam layer adds extra height to the Forever Pillow. This layer is particularly important if you have a firmer mattress and broad shoulders. Sturdy Slumber Layer: We have once again opted for a top-notch visco foam (volume weight 50). This adaptable, firmer base layer ensures the necessary stability that your head needs in every sleeping position. ¹ Footnote: The volume weight refers to the so-called raw density of the material. It indicates how many kilograms of foam were used in a cubic metre. The higher the volume weight, the more durable the material is. ² Footnote: Point elasticity refers to how a foam reacts when pressure is applied to it. Point elastic materials are characterised by high and precise adaptation. The foam should only give way where pressure is also applied. https://swagatamtraditions.com/the-ultimate-guide-to-derila-pillow-benefits-discounts-and-where-to-buy/