100% Australian Wool Washable Crib Wool Underlay/Cot Underblanket Baby Blanket This 350gsm Wooltara Australian Wooly Cot underblanket is made with 100% Australian washable wool pile for natural comfort and warmth and protect your children's mattress. 20cm fitted cotton skirt is able to stretch to fit most cots. Children grow faster in their first five years than they ever will again in their lives. Much of this important development takes place while they are sleeping, so why not give them the best possible sleeping environment with Wooltara's My First Woolly range? Specially designed for children with the emphasis on natural fibres, My First Wooly range can make you buying your child a healthy, high quality, natural wool product.