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Our Recommendation for Mattress Firmness: Firmness Level 2 = medium firm up to approx. 80 kg body weight Firmness Level 3 = firm approx. 81–110 kg body weight Firmness Level 4 = very firm approx. 111–130 kg body weight The compression hardness determines the firmness level of a mattress: The compression hardness indicates how much pressure (kilopascals) is needed to compress a mattress from its original state by 40 percent. The higher the compression hardness of a mattress, the firmer is its core and the faster it returns to its original shape when the pressure is released. With a low compression hardness, the core is softer and more susceptible to high loads, which can lead to the formation of indentations. Based on the compression hardness, the respective firmness level of the mattress is determined, which should serve as guidance for the consumer.

Down: Are delicate structures made from a barely visible core and the finest, branched hairs. Due to their three-dimensional structure, they can form a large cushion of air, and they are highly elastic. Because of these properties, down feathers are incredibly light, have a high loft, and possess a large heat storage capacity - ideal for use in a duvet. Down also has excellent moisture transport properties and, due to their natural fat content, help prevent the spread of dust mites. Feathers: Have a longer quill and less air inclusion than down. Therefore, the proportion of feathers in the duvet is kept as low as possible. In pillows, however, feathers are indispensable: Their supporting power helps relieve the head and neck, while still providing a soft lying surface. Washing instructions for down duvets and down pillows: With the right care, down products can also be washed well in a standard household washing machine. Learn how to wash your down product in our billerbeck YouTube videos: How do I wash a down duvet? How do I wash a down pillow?   New Exclusive White Goose Down The beautifully matured, particularly large and voluminous Exclusive white goose down feathers impress with their wonderfully soft feel and, despite their lightness, provide very high heat retention - the foundation for exclusive sleeping pleasure. This product is only available in limited quantities and is therefore especially valuable. New Classic White Goose Down Due to weather conditions, especially temperature fluctuations, the white geese produce large, voluminous down feathers. These enclose a lot of air due to their large volume and thus insulate the warmth. Their insulation capability is high - the down provides significantly more warmth than comparatively smaller down feathers. New Classic White Goose Down The matured Classic goose down feathers are characterized by a soft feel and high elasticity, making them particularly durable in use. In addition, they are voluminous and enclose a lot of air. The air insulates the warmth - ensuring a cozy sleeping climate. New Basic White Goose Down and Feathers The Basic goose down and feathers have good loft and elasticity. The down and feathers are carefully selected. The result is a comfortable sleeping climate adapted to the sleeper's warmth needs.