Want a way to bring new life to your mattress without killing your wallet? This 2-inch memory foam mattress topper is the perfect solution because it will give you most of the benefits of having a new mattress at only a fraction of the cost. These toppers are designed so your fitted sheet will still be tight over both the mattress and the topper. This is done by making the topper 1 inch shorter on all four sides than an industry standard-sized mattress. LUCID memory foam creates a comfort layer that helps relieve neck, back and shoulder pain as it cradles and supports your natural pressure points. The memory foam works through the night to correctly align your spine, improving your posture and preventing lower back pain. The ventilated memory foam optimizes air flow to keep you cool for a comfortable sleep. Open cell technology makes for a durable, more resilient foam that will not leave long-lasting body impressions. This mattress is made of CertiPUR-US certified foam. That means the foam in the mattress has been tested and certified by an independent laboratory saying it meets special criteria for content, physical performance, indoor emissions and environmental stewardship. Careful construction guarantees no prohibited phthalates, no ozone depleters, no CFCs, no mercury, no lead or heavy metals, no formaldehyde, no PBDEs, and low emission (VOCs) for indoor air quality. Memory foam may give off a harmless odor as it off-gasses during initial expansion. We recommend you open the mattress in well-ventilated room and wait 24 hours before sleeping on your new mattress. Some people are more sensitive to odors and may want to wait longer before using the mattress. The smell should dissipate within 48 hours.