The Exo Terra® Vines are extremely realistic replicas of their natural counterparts, and can be used for decorative purposes as well as for enlargement of the 3-dimensional dwelling space for your arboreal animals. Unlike natural vines, the Exo Terra® Vines are bendable & twistable, so they will fit any terrarium size. Because natural vines often cannot be placed in the right spot, you can use Exo Terra Vines, which can be bent and placed where it is most beneficial to your animals.