Set of 2 bags Highly compressed, 100% coniferous wood. Expands to approximately 3 times its volume when water is added in a few minutes. Excellent for mite prevention and deodorization. Made with 100% coniferous wood, perfect for stag beetles and rhinoceros beetles! Expands to approximately 3 times its volume when water is added in a few minutes. Highly absorbent, making it difficult for spilled jelly to become sticky. Keeps the breeding case clean, making mat replacement easy♪ Excellent for mite prevention and deodorization. (Adding a wet tissue is recommended for fall prevention and dryness prevention)