Floating Water Hyacinth/Lettuce Plant Protector 24" W -pond island-koi proof. Condition is New. Shipped with USPS Ground Advantage. Material Polyethylene (PE) Color Black/Grey Special Feature Fade Resistant Style Custom Planter Form Bag Shape Round Protective island for floating pond plants (plants sold separately). Protects root systems from being eaten by koi and other fish living in your pond. Prevents floating plants from being pulled into skimmer boxes. Creates a gorgeous display for your pond/water garden plants. Measures 24 inches in diameter. Great for adding Water Hyacinth or Water Lettuce. Also available in 18" and 36" diameter Floating Flora Islands.