Exo Terra Wet Rock caves support your reptile with a secure hiding place. A hiding place is needed for your reptile to be able to hide and sleep. Without a safe spot, reptiles, amphibians and invertebrates will easily develop stress which can effect their activity and appetite. Exo Terra Wet Rock Caves are made from eco-friendly ceramic, which retains moisture and helps reduce moisture and temperature fluctuations that can occur, aiding the shedding process. These caves make it easy to provide a humid micro-climate, so are also ideal egg-laying sites. Key Features: Secure, moist hiding place. Helps to prevent stress and aids the shedding process. Easy to maintain a humid micro-climate. Provides an ideal egg-laying site. Reduces extreme temperature and moisture fluctuations. Perfect for reptiles, amphibians and invertebrates. Size Small PT3171 Dimensions (H x W x D) 3.6 cm x 6 cm x 11 cm Medium PT3172 Dimensions (H x W x D) 9 cm x 10.5 cm x 16.5 cm Large PT3173 Dimensions (H x W x D) 11 cm x 11.2 cm x 20 cm