This cork bark is made of natural materials perfect for creating a naturalistic habitat for your reptiles amphibians and arachnids. The half-rounds provide secure hiding places and natural shelters while full-rounds can be used lying horizontally as shelter or standing upright as a plant holder. This cork bark is easy to cut and customize to the size and shape of your terrarium. It s suitable for all species providing safety and comfort and promoting their health and wellbeing.