• Low Risk: Suitable for individuals who can shift their weight and have good mobility. These are usually basic comfort cushions made of standard or contoured foam.
  • Medium Risk: Designed for users with slightly impaired mobility who may sit for longer periods. These often use more advanced materials like gel or higher-density, layered foam.
  • High Risk: For individuals with limited mobility or existing skin issues. Cushions in this category typically incorporate gel, air, or hybrid systems to provide significant pressure redistribution.
  • Very High Risk: Intended for users who are immobile or have severe existing pressure sores. These are often advanced "dynamic" or "alternating air" cushions, sometimes powered by pumps to constantly shift pressure points.