A step-up ErgoCare tight-top mattress with an added foam layer and a taller pocket-spring core.
Posture Guard sits between Spinal Guard and Ortho Guard. It keeps the tight-top format, adds 2 cm 2560# foam to the comfort build and increases the primary pocket-spring height to 16 cm.

Posture Guard is more layered than Spinal Guard while staying within a tight-top construction. It adds a 2 cm 2560# foam layer and uses a 16 cm spring core, but does not move to the pillow top or 18 cm spring core used in Ortho Guard.
Consider Posture Guard if you…
Posture Guard adds a 2 cm 2560# foam layer.
The spring height increases from 15 cm in Spinal Guard to 16 cm here.
It adds material depth without moving to Ortho Guard's pillow-top format.
Moving down to Spinal Guard: choose the simpler / lower construction if you do not need the added layers or top-design changes in Posture Guard.
Moving up to Ortho Guard: choose it if you want the additional verified construction layers or deeper build introduced above Posture Guard.
Size and warranty details are pending confirmation and are not shown here.