Wool fiber is naturally resistant to bacteria, mite, and even water. Wool is a natural barrier to keep baby dry and comfortable. Used between fitted sheet and mattress or futon or alone Washing instructions: Hand rinsing cool water, use very little if any mild detergent, lay flat to dry. 100% wool milled in USA Multiple sizes available *Futon is not included* Care instructions: - wool puddle pad include "care label" - hand or machine wash delicate, cold water and dry medium heat, dry completely before use