The Merkury HGLO Floating Light Up LED Lily Pads come in a 4-pack and are designed to light up your pool or hot tub with a warm multicolor LED light. These free-standing lights are easy to use with a push-button control style and require no assembly. Made of durable plastic and powered by batteries, these lights are suitable for various pool and spa environments. The lights have a diameter of 4.33 inches and a height of 1 inch, making them a convenient and decorative addition to your outdoor space.