Magnetic Mattress Pad Neodymium System 1800 relaxes your body, soothes away tension and helps you get a more restful night's sleep. But that's where the similarity ends. The System 1800 magnetic mattress pads have a lot more more magnets, so in additiion to the benefits they sh with the System 900, they're designed for relieving discomfort . Because the magnets very closely spaced magnets, the magnetic field is much denser and therefore more effective for relieving discomfort. In addition to the large (3/4"), 4,300 gauss ceramic magnets used in the System 1800 magnetic mattress pad, we added 12,800 gauss neodymium magnets to greatly increase the power of the magnetic field over the back and hip as, where it's needed most. Because of its enhanced magnetic field strength and precise placement of neodymium magnets, the System 1800 magnetic mattress pad provides significantly improved therapeutic effectiveness compd to magnetic mattress pads without neodymium magnets. System 1800 magnetic mattress pads made with Thera-Core medical grade, high-density foam to greatly enhance comfort and improve its effectiveness. Unlike most high-density foams, Thera-Core is softer so it's much more comfortable to sleep on. And if your mattress has a soft pillow-top, it won't ruin the feel like other high-density foam magnetic mattress pads do. System 1800 magnetic mattress pads extremely well made (in the USA) - So much so that they come with a Lifetime Warranty on the magnetic strength of the pad and a Lifetime Warranty on the construction of the pad. The pad is covered in a gorgeous, premium quality, cream colored quilted Damask on top. The bottom of the pad is covered in a coordinated, cream color non-skid fabric so it doesn't slide around on your mattress. They're about 1¼" thick and easily fit under a fitted sheet.RETURN POLICY:All mattress pads have a 90-day return policy.