The Kathson 3 PCS Aquarium Grass Mat Decorations Artificial Plastic Lawn Ornament Landscape Green Plants Decoration for Saltwater Freshwater Tropical Fish Tank Decor is a great way to add some style and life to your fish tank. These mats are made of high-quality plastic that is soft and durable, and they come in a variety of colors including green, blue, yellow, orange, red and purple. They also have a variety of designs including animals, plants and landscapes. The mats are easy to install and clean, and they come with a warranty.