Exo Terra Moss Mat, 40 Gallon, Terrarium Substrate Extremely natural-looking terrarium substrate that can be used for all types of reptiles and amphibians Soft, hygienic and absorbent, the Exo Terra Moss Mat is easy to use and can be cut to fit any terrarium size Simply rinse clean when soiled or replace as necessary 40 Gallon Measures 35.5-Inch x 17.5-Inch