Slightly felted and tightly woven wool creates an absorbent surface that keeps dampness from getting through to your mattress. Made from a premium Eco-wool, this product is simple and easy to care for and offers a completely natural product to protect your mattress. No synthetics of any kind are used. Design: Thick felted 100% woven organic wool textile. It lays flat on top of the mattress without straps and is held in place by your fitted sheet. Slightly felted and tightly woven wool creates an absorbent surface that keeps dampness from getting through. Materials: 100% organic wool textile Manufacturing: Made in the U.S.A., this bedding product was produced using sustainable and ecological practices. Our manufacture specializes in using only organic cotton fabrics and local premium Eco-Wool from the U.S. Western Regions. They are proud to be a zero waste company (reusing/recycling all of their production by-products) and are committed to providing quality products. Dimensions: Crib: 27" x 52" Twin: 40" x 77" Full: 56" x 80" Queen: 62" x 80" King: 78" x 80" Cal King:72" x 80" Care: Machine washable on gentle cycle. AMENITY NOTES: "Organic basics should be beautiful, simple and honest. This collection of basics is all that and more. They will wear beautifully."