Wool that is 100% natural, biodegradable, and renewable provides excellent insulation against hot and cold circumferences and also organizes the humidity in the air, thus providing perfect sleep for the user. Wool products are quite resistant against dirt and stain and can be easily cleaned. Wool has the ability to absorb moisture at a rate of 33 percent of its dry weight without giving it a sense of wetness. Wool has strong durability as it hardly wears off, therefore it keeps its shape and appearance all the time. Wool is an active fiber that reacts to changes in body temperature. So it helps you stay warm when the weather is cold, and cool when the weather is hot. Wool does not attract dust like other fabrics such as feather and down. Simply air your woolen quilt or underlay to maintain loft and freshness. Machine washable and dry clean only options are available. A perfect solution for asthma and allergy sufferers.