Features: 1) The pet furniture is made of the polyurethane foam, durable, non-toxic, environmental friendly and looks very realistic, can imitate the natural rocks and trees to provide a warm and natural living home for the pets 2) They are light and can stick on the glass of tank by silicon glue easily. Have the features as easy set up and take off 3) Size: 20 x 19 x 5.5cm producing area:China payment:T/T, L/C