The mattress came very quickly and was ready for the opening of the vacuum packaging. Helpful hint of that the mattress gets in until a few days their proper form, this is absolutely true, It adapts to the body shape, and very individually depending on body shape. It has two sides, a softer and a firmer .. They can be very helpful at all WWirbelsäulen- and joint problems, rheumatism arthritis hip pain fibromyalgia etc. also at the cervical spine problems and stress the right pillow is (also Visco) very advisable, since then both form a good unit (soft comfortable yet supportive) . So the entire muscle can - and Fasciensystem the body, which leads to tensions with stress ideal regenerate. During the day the good Schlafqualiät makes clear positive effect by a relaxed muscle. As a therapist / osteopath I would highly recommend this mattress ,. Also suitable for all stomach sleepers. For those who prefer a very firm and hard unyielding surface, (which is not necessarily healthy) should choose a particular hardship class The customer service is friendly and accommodating with all 5 stars and personal extra stars,