The most important thing the diagram makes clear is the hardware section at the top: the same carbon fiber cradle (either the S-Type or Brainlab version) is the foundation for all five configurations. A clinic buying this system isn’t buying five products — they’re buying one cradle and then selecting masks that define the clinical use. That has a real implication for WooCommerce: the cradle should be a Simple Product with all five mask ranges shown as cross-sells, and the mask products should each link back to the cradle as a required companion product.

The blue/purple split also highlights a key distinction that’s easy to miss in the catalog: DSPS® (double shell, blue) and SSPS® (single shell, purple) aren’t two separate product lines — they’re two operating modes of the same hardware. DSPS® wraps the patient in two shells simultaneously, which is why it delivers the published submm SRS accuracy. SSPS® uses only one shell stretched to the cradle rim rather than the baseplate, which is the core innovation for IMRT — eliminating the overstretching problem that makes traditional thermoplastic setups less stable. Same cradle, fundamentally different clinical logic.