Features: 1. Made of high quality resin material, corrosion resistance, non-pollution, non-toxic and non-radioactive. The suspended stones are eco-friendly products for your fish. 2. Lifelike aquarium décor. The synthetic moss stone floating rocks simulate a fantastic sea world view, adding vitality to your fish for tank, and brighten your aquarium landscape. 3. Attached with a transparent fishing line and two suckers placing at the bottom of the fish for tank, the stone will float easily at any level by adjusting the length of the fishing line. 4. The stone surface with green simulation moss offers the natural environment feeling. 5. Can absorb harmful bacteria and heavy metals in water, not only promote plants climbing and take roots, but also is good for fish growth. Specifications: Material: Synthetic Resin Color: As Pictures Show Size: S - Approx.13x8.5cm/5.12x3.35in for M - Approx.18.5x12cm/7.28x4.72in L - Approx.25.5x17.5cm/10.04x6.89in Weight: S - Approx.86g for M - Approx.218g L - Approx.825g Package Includes: 1 Piece Artificial Floating Moss Rock 2 Pieces Suckers and Fishing Line note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!