The Exo Terra Forest Plume Moss (7 Qt) is a natural compressed moss for creating humid microhabitats. This 100% natural sphagnum moss expands to 7 quarts and is ideal for tropical terrariums or humid hide boxes. It retains moisture exceptionally well, aiding shedding and providing a medium for egg laying or burrowing. The forest moss is also free of dyes or chemicals, making it safe for frogs, salamanders, or any reptile needing high humidity.