1.Material:polyurethane foam

2.durable,non-toxic,no element leak out,no influence on the PH level of the water.

3.All the paints of the boards are made of eco-friendly materials which will not dissolve in the water.And it's no danger if the fish chews and swallows a little.It is safe for the fish.

4.Perfect third dimension and imitating the nature living environment for the fish to provide the best looking effect.

5.More concave places for the fish to hide out so as to reduce the conflict between the fish.

6.Two pieces of the same items can be combined with the same waving borders to build up the continuum background.

7.Easily cut by the knife and stick on the glass of tank by silicon glue

8.Easy to install and disassemble

9.Ideal for decorating the aquariums,terrariums, the wall of home and the garden.