Resin has the advantage that it is robust and offers flexible design possibilities. It is possible to practically copy every kind of decoration item like wood and stone with resin and have it look as realistic as the original. After hardening resin is safe for the animals and can also be used in water. The Lucky Reptile Cozy Caves look like flat pebbles and fit well in any type of terrarium. They are perfect to make the animal feel safe and secure, because reptiles love narrow hiding places in which they have body contact to the ceiling of the hide. Generous hides are not well accepted by most reptiles, as the animals do not feel safe in them due to this lack of contact. Due to a change in overseas order processing by our suppliers, please allow an additional 2 days for the expected deliv.