pond protectors will discourage pests such as heron or cats from accessing your fish.EASY INSTALLATION - The included clips slot over the pond protectors, linking them together. Simply link together the needed amount compatible with your sized pond.Lightweight plastic design ensures natural flotation and almost invisible just a few feet away, unlike traditional nettingFLOATING DESIGN - The lightweight design of our pond protectors means they float on the surface of the water, creating a protective guard.The lightweight design means the pond protectors float on the surface of the water, creating a protective layer.These pond protectors are easy to install and are suitable compatible with any sized pond.colour:blackMaterial:plasticsize:Length: 26.8cmWidth: 26.3cmThickness: 0.2cmPackage Contents:20 * pond protectors40 * linking clipsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.