The Natura Listic Appearance of Natural Resin Wood Bark Blends in with Terrestrial or Aquatic Environments provides your pet with both shade and security in a natural habitat. The set open ends can be used alongside the glass or look through the window at the top to get a fascinating glimpse of activity. The non-porous synthetic finish will not rot like real wood, and the exterior resists bacterial growth. The Natura Listic Appearance of Natural Resin Wood Bark Blends in with Terrestrial or Aquatic Environments is easy to clean with soap and water.