The Alerta Sensaflex 4000 is a very high risk profiling memory foam mattress built with a high density base, foam centre and a castellated gel memory foam top. The mattress is designed with a section of v-cut memory foam which creates additional air movement for enhanced pressure relieving properties, providing effective comfort, care and pressure redistribution for users in hospital, nursing and care home environments. To launder the cover in a washing machine, set the main wash to 65oC for no less than 10 minutes or 95oC for no less than 3 minutes. The cover can be tumble dried on low heat and the temperature must not exceed 60oC. The foam can be autoclaved at 134oC.