Size is 4 Inch x 3 inch wide x 3 inch tall (10cm x 9cm wide x 10cm tall). They are 100% safe for fish made from special resin that is non toxic and designed specifically for use in aquariums and fish tanks. Will not alter Ph levels. Wash in water prior to using in aquariums. For use in any fish tank, Aquarium or Vivarium. Sml Foreground Plant On Wood, great detail in design. Natural looking artificial driftwood with silk plants, totally inert and imitation. This aquarium ornament is great for decorating your aquarium with minimum maintenance. Natural Looking Wood and Plants, Polyresin construction Heavy base free standing Driftwood with Silk plant foliage that is approx 4 inch. Then a green foliage lines the top of the polyresin driftwood. Looks great in any aquarium or fish tank. Will not alter Ph levels. Wash in water prior to using in aquariums