Lawrence hates ‘NO SPRING’ ‘FOAM ONLY‘ mattresses that often become sagging back killers just a year or so after buying. But he loves SLEEPING DUCK’s MACH II MATTRESS, which is supported by TWICE TEMPERED STEEL INDESTRUCT SPRINGS. That’s why he did this CRAZY MONSTER MATTRESS test, putting them both up against a 15 TONNE STEAM ROLLER to see if they truly can resist sag and protect your back.
Not enough history yet to show a trend.