We attached great importance to safety by developing our MA mantles for large matrasses, provided with liquid recovery system, should matrass accidentally break. Housing and internal calottes completely made of stainless steel and covered with glassfibre cloth. Resistances are accomodated in a ceramicfiber block, in order to make maximum use of the generated heat, while reducing outer wall temperature to a minimum. Temperature is controlled by a graduated thermoregulator. MA mantles are fitted with an ON /OFF switch with relevant green light.