70% viscose from bamboo / 30% cotton extra-large 47" x 47" coordinated set softer with each wash Hello, world! Our super soft bamboo hat and swaddle set will have your newborn cozy and camera ready. Makes the perfect gift for any new mom. This set includes; a deluxe muslin swaddle, jersey top knot hat size 0-4 months, and a coordinating announcement sticker.