Does the Classic 800 mattress maintain its quality and shape over time? Which certifications does it have?

Yes. Its 800 individually pocketed spring system, reinforced high-resilience Waterfoam perimeter support box and premium materials are engineered to maintain their shape, support and performance even after many years of daily use. The Classic 800 is manufactured using certified materials that comply with CertiPUR®, OEKO-TEX® Standard 100 Class 1, LGA Quality, and ISO 9001 standards, guaranteeing safety, premium quality, durability and the absence of harmful substances.