Stiftung Warentest is widely known for its independent and thorough product tests that help consumers make informed purchasing decisions. The focus is not only on electronics or household appliances, but also on everyday products such as mattresses. The Stiftung Warentest mattress tests provide a comprehensive overview of the quality and performance of different mattress models. Such a test is also the basis for the verdict on our Sleezzz Smart mattress in the 02/2023 issue, which was tested in the 90x200cm size and scored GOOD (1.9).

But what exactly is tested in a mattress test ?

Lying properties: The way in which a mattress supports the body and adapts to individual contours is crucial for restful sleep. Stiftung Warentest therefore evaluates the lying properties of a mattress, including comfort and pressure relief.

Durability: A mattress should not only be comfortable, but also durable. Stiftung Warentest therefore tests the durability of various models to ensure that they retain their shape and support properties even after prolonged use.

Cover: The cover of a mattress contributes significantly to sleeping comfort and can also influence hygiene. Stiftung Warentest therefore tests the quality of the cover in terms of its breathability, softness and durability.

Health/environmental properties: More and more consumers are attaching importance to environmentally friendly products that are harmless to health. Stiftung Warentest therefore also tests the materials and manufacturing processes of mattresses to ensure that they do not contain any harmful substances and are environmentally friendly.

Handling: The handling of a mattress can also have an impact on customer satisfaction. Stiftung Warentest therefore tests aspects such as the weight of the mattress, its reversibility and its suitability for different bed frames.

Declaration: Correct labeling and information about a mattress are important so that consumers know what they are buying. Stiftung Warentest therefore checks the declaration of the mattress models for accuracy and completeness.

Our Sleezzz Smart mattress scored well in all these categories, making it a first-class choice for restful sleep.

Discover the unique properties of a visco-foam mattress, also known as a memory foam mattress or visco-elastic mattress. This type of mattress offers a number of features that make it special:

1. pressure relief: thanks to its reaction to body heat, the visco-foam adapts individually to the shape of the body. This ensures an even distribution of weight and effective pressure relief, which is particularly beneficial for people with joint or back problems.

2. contouring: The visco-foam mattress ensures excellent contouring by adapting to the individual body shape. It temporarily retains the shape of the body when you lie on it and slowly returns to its original shape when the pressure is released.

3. motion isolation: By minimizing the transfer of movement from one side of the mattress to the other, the visco-foam mattress is particularly suitable for couples. This means that the movements of one sleeping partner are less disruptive.

4. temperature sensitivity: adapting to body heat enables the visco foam mattress to adapt to the individual body temperature and thus create a comfortable sleeping environment.

5. allergy-friendly: visco foam is generally resistant to dust mites and mold, making the mattress particularly suitable for allergy sufferers.

Experience the comfort and support of a visco foam mattress and enjoy restful sleep with these outstanding properties.

Relaxed sleep begins with an optimal sleeping climate.

The 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam relies on breathable materials that ensure efficient regulation of humidity and optimum air circulation. But it's not just the mattress that plays a role in your sleeping comfort. You should also look for breathable materials in comforters, pillows and bed linen to create the perfect sleeping environment. Climate fiber has proven to be indispensable in the sleeping area and offers numerous advantages. It improves lying comfort with a soft, supple surface and regulates the climate thanks to its high breathability and efficient moisture release. It warms without retaining heat and remains extremely dimensionally stable yet elastic.

Our 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam is particularly suitable for people who suffer from heavy sweating at night. Enjoy a restful sleep with this mattress and start the new day feeling rested.

The cover of the 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam is made of high-quality, breathable polyester stretch double fabric. Thanks to the integrated 4-sided separable zipper, the cover can be easily removed and put back on, making it easy to clean in the washing machine at 40 °C. In addition, the core is sewn to an inner cover, which makes it easier to re-cover after washing.

Allergy-friendly

The 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam is particularly suitable for allergy sufferers, as regular washing can effectively remove dust, mites and pollen from the cover . House dust mites prefer warm and humid environments, which is why beds are particularly attractive to them. To counteract their spread, the 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam is equipped with a breathable climate fiber and is free from animal materials. The removable cover can be washed at 40 °C, making it easy to clean. This mattress for allergy sufferers allows easy cleaning of the cover every two months at a temperature that is deadly for mites (40 °C). This ensures that the mite excrement loses its harmful effect.

Thanks to its excellent climatic properties, the 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam is particularly recommended.

Like lying on clouds:

This foam creates a feeling of weightlessness, and that's no surprise: Originally developed for space travel in the 1970s, visco foam is a thermoelastic material that reacts to body heat. The open-pored material adapts perfectly to the contours of the body and retains this shape - it "remembers" the individual contours, so to speak. The "memory foam" effect occurs after about five minutes. To ensure sufficient support, a visco foam mattress always consists of several layers that are combined with other materials, as the foam alone would be too light. 

The 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam offers a 3 cm air memory foam layer that always returns to its original shape when pressure is relieved. The supporting base core consists of comfort foam with a height of 13 cm and a density of 34 kg/m³, which is divided into 7 ergonomic lying zones. The incisions in the shoulder and hip area, which are carefully adapted to the contours of the body, ensure point-elastic lying zones and precise support for the spine. The smooth underside of the core can be used as a firmer lying side.

The cover of the 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam consists of two layers: a lower support layer and an upper comfort layer, which is responsible for both the pleasant feel and the attractive appearance. The bottom layer is made of robust material, while the top layer is softer and fluffier. The two layers of the double fabric cover are either woven or glued together to create a stable yet comfortable surface. The result is a hard-wearing cover with a pleasantly soft feel.

An outstanding advantage of the double cloth cover of the 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam lies in its breathability. Thanks to the use of air-permeable materials, air can circulate and moisture is efficiently wicked away, creating a pleasant sleeping environment. Any moisture absorbed is quickly released into the surrounding air. In addition, the double cloth cover of the 7-zone viscoelastic mattress Sleezzz Smart 140 x 200 cm, height 18 cm, firmness level H3 with air memory foam is removable and washable, which makes cleaning and care easier.