Does the Sevenlife 20 mattress maintain its shape and quality over time? Which certifications does it have?

Yes. Its high-density single-piece 100% Latex Foam core is engineered to preserve its elasticity, comfort and supportive performance for many years, ensuring exceptional durability and consistent sleep quality. The Sevenlife 20 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.