The Dyna-Form Mercury Advance mattress is a High / Very High Risk dynamic replacement system, combined with the benefits of modern foam technology (patent pending). Offering high levels of patient comfort, this unique system has the facility tostep up to that of a dynamic mattress when clinically required. Similarly, the mattresss function can be downgraded as the patients condition improves. These features make it particularly beneficial for use within the patients home or palliative care environment and help reduce logistic and decontamination costs. The clinical benefits of a single system are equally applicable to those of a modern hospital setting. A higher maximum weight capacity, up to 40 stone / 254kg, allows the product to meet the modern challenges of those heavier clients. All component parts are interchangeable and replaceable, maximising product life and reducing environmental impact. The outer cover comprising a high frequency welded, multi stretch and vapour permeable fabric satisfies the strictest infection control policies.