The problem with your mattress boils down to firmness. What seems to be soft may be firm for some people and vice versa. That’s why firmness has to be adjustable. One of the world’s leading mattress makers, iSense, has heeded the call. You can ditch your old mattress, replacing it with iSense’s adjustable firmness mattress. Every mattress utilizes an adjustable firmness technology to relieve pressure and cradle your body. Enjoy a 180-day free trial and a 10-year limited warranty on every product.