Lucky Reptile Sphagnum Moss comes from controlled cultivation and is from highest quality. It is shipped dried and pressed to a brick which allows long-term storage. If water is added this moss brick will swell up to about 5 litres of fresh and moist sphagnum moss. This moss is excellent for providing humid places inside the terrarium (e.g. hiding boxes for snakes) and it increases the overall humidity). Excellent for tropical terrariums and most amphibians.