The Aqua Lily Pad name, including our foam color combination (Yellow / Green), have been certified as Registered Trade Marks (Reg. No. 4,476,351) from the U.S. Patent and Trademark Office. We will NEVER sell a Pad without our Aqua Lily Pad graphics on the pads. Our graphic film contains a proprietary, multi-component, UV Stabilization Package that aids in the protection of the foam from sun damage. Pads sold in the market, with or without graphics, DO NOT contain this proprietary UV Stabilization Package. For this reason, our tests reveal that no other product has the surface longevity of the Aqua Lily Pad. Our Proprietary UV package was designed for, and has proven to exceed, 3 years outdoors in the California climate, pursuant to proper care and use as outlined in our Owner’s Manual. Longer periods (4-5 years) are being experienced in less sun intensive and seasonal climates.