Modular Independent Suspension Unit M3 Firmness Level:0.0 - Firm Designed for hot sleepers or

Designed for hot sleepers or hot climates

the replaceable M3 Comfort Layer facilitates heat dissipation and encourages optimal air circulation

providing an instant sense of elevation while efficiently isolating motion caused by body movements

and adjusts to your movements while you sleep

Modular Independent Suspension Unit M3 Firmness Level:0.0 - Firm Designed for hot sleepers orThe M independent suspension units are designed so you can easily update the firmness level on your M mattress. Each system includes enough coils to update one side of the mattress. As your comfort preference changes over time, you no longer need to buy a whole new mattress with the M mattress system.