Medium Firm is the level of support to the body, suitable for average to heavily weighted people. This is not a comfort rating.
Open Coil are Bonnel springs in an hourglass shape, joined creating an open coiled mattress.
Fibre Fillings fillings are 100% polyester, man made, very durable, great recovery.
25mm Of Memory Foam is body moulding and pressure relieving, a filling that always recovers to its original state, ultimate comfort.
Source 5 Domestic Flammability Rated BS 7177 Medium Hazard, Hotels, Universities, Holiday Camps, Retirement Homes.
Mattress Depth 25 cm