Its firm but material contain really bad smell . It has been almost a month since I am using and still smell like demp carpet . Its really hard to get rid of it . I open my window every day in this cold weather but its not going away . Its get bad once you put your head on it . doesnt matter how firm it is but its really uncomfortable to sleep on it with this chemical smell . I dont know what this new material is , They have to find better way to seal the smell .I wont recommend spending £219 for uncomfortable sleep .