Completely natural moss cage substrate for amphibians and wetland environment reptiles. Great for use in humidifying shelters for all types of reptiles and amphibians. Excellent for use as an egg-laying and incubation medium for a variety of reptiles. Available in 4 sizes including a mini compressed bale size for multiple terrariums. Available Sizes: Medium: For 10 gallon Large: For 15-20 gallon XLarge: For 30-40 gallon