Flat planks made of MDF coated with natural beech wood veneer. They feature a seamless surface that is flat and rigid, covering 95% of the frame's free area. The remaining 5% is used for essential mattress ventilation, with gaps and ventilation openings not exceeding 10mm.

The ergonomic Royal frame provides optimal support and a feeling of restfulness, making it ideal for use with mattresses such as Talalay Latex or Talalay and Coconut, or those with an independent spring system.