Reduces pressure, dissipates heat and moisture away from points of interface pressure - Individually moulded Visco Elastic Memory Foam cushion, this unique construction means hugely improved pressure reduction - Conforms to users shape - Increased stability - Increased sitting tolerance and improved posture - Supplied with Harley Premium Dartex waterproof / VP cover - Other cover options available. Suitable for patients up to high risk (with appropriate nursing care).